{"product_id":"bta-hdpe-bioballs","title":"BTA HDPE Bioballs 25mm\/38mm\/50mm | Filtration Media | BTAqua","description":"\n\u003c!-- ═══════════════════════════════════════════════════════════\n     BTA PRODUCT PAGE — HDPE Bioball\n     Design System: LIQUID PRISM v6.1\n     MAIN1 = Blue  |  MAIN2 = Silver  |  ACCENT1 = Purple  |  ACCENT2 = Gold\n     ═══════════════════════════════════════════════════════════ --\u003e\n\n\u003c!-- SEO \u0026 METADATA --\u003e\nBTA HDPE Bioballs 25mm\/38mm\/50mm | Filtration Media | BTAqua\n\u003cmeta name=\"description\" content=\"Virgin HDPE bioballs for trickle filters, sumps, ponds and aquaculture biofiltration. 25mm, 38mm and 50mm sizes. Bulk and trade pricing available. PIAA member.\"\u003e\n\u003cmeta name=\"keywords\" content=\"HDPE bioballs, bioball filter media, trickle filter media, aquarium bio balls, pond bio balls, aquaculture filtration media, sump media, 25mm bioballs, 38mm bioballs, 50mm bioballs, biological filtration media, MBBR media, shower filter media, RAS filtration, BTAqua bioballs, Biotech Aquatica\"\u003e\n\u003clink rel=\"canonical\" href=\"{{%20canonical_url%20}}\"\u003e\n\n\u003c!-- Open Graph --\u003e\n\u003cmeta property=\"og:type\" content=\"product\"\u003e\n\u003cmeta property=\"og:title\" content=\"BTA HDPE Bioballs 25mm\/38mm\/50mm | Filtration Media\"\u003e\n\u003cmeta property=\"og:description\" content=\"Virgin HDPE bioballs for trickle filters, sumps, ponds and aquaculture. Three sizes, bulk pricing, Aussie owned.\"\u003e\n\u003cmeta property=\"og:image\" content=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/5200\/4338\/files\/Bioball.jpg?v=1737949504\"\u003e\n\u003cmeta property=\"og:url\" content=\"{{ canonical_url }}\"\u003e\n\u003cmeta property=\"og:site_name\" content=\"Biotech Aquatica\"\u003e\n\u003cmeta property=\"product:brand\" content=\"Biotech Aquatica\"\u003e\n\u003cmeta property=\"product:availability\" content=\"instock\"\u003e\n\u003cmeta property=\"product:condition\" content=\"new\"\u003e\n\n\u003c!-- Twitter Card --\u003e\n\u003cmeta name=\"twitter:card\" content=\"summary_large_image\"\u003e\n\u003cmeta name=\"twitter:title\" content=\"BTA HDPE Bioballs 25mm\/38mm\/50mm | Filtration Media\"\u003e\n\u003cmeta name=\"twitter:description\" content=\"Virgin HDPE bioballs for trickle filters, sumps, ponds and aquaculture biofiltration.\"\u003e\n\u003cmeta name=\"twitter:image\" content=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/5200\/4338\/files\/Bioball.jpg?v=1737949504\"\u003e\n\n\u003cstyle\u003e\n@font-face{font-family:\"MBF-Humanica\";src:url(https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/5200\/4338\/files\/MBF-Humanica.woff?v=1782184804) format(\"woff\");font-weight:400 900;font-display:swap;}\n\n:root{\n  --void:#010508;--abyss:#020a10;\n\n  \/* MAIN1 — BLUE *\/\n  --main1-deep:#0c1f33;--main1-mid:#112a45;--main1-bright:#0478b8;--main1-pale:#56ccf9;--main1-glow:rgba(4,120,184,.15);--main1-highlight:#a5e3fc;\n\n  \/* MAIN2 — SILVER *\/\n  --main2-deep:#8a9bae;--main2-mid:#c0c8d4;--main2-bright:#d8e0ea;--main2-pale:#f0f4f8;--main2-glow:rgba(192,200,212,.15);--main2-highlight:#ffffff;\n\n  \/* ACCENTS *\/\n  --purple-deep:#3b0764;--purple-mid:#7c3aed;--purple-bright:#9333ea;--purple-pale:#c084fc;--purple-glow:#a78bfa;\n  --gold:#f59e0b;--gold-bright:#fbbf24;--gold-deep:#b45309;--gold-glow:rgba(245,158,11,.55);\n\n  \/* Variant accents (quarantined to 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2.6rem;}\n.bta-spotlight-flag{display:inline-block;font-family:var(--font);font-size:.72rem;letter-spacing:.4em;text-transform:uppercase;color:var(--void);background:linear-gradient(135deg,var(--main1-bright),var(--main1-pale));padding:.4rem 1.2rem;border-radius:4px;margin-bottom:1.2rem;font-weight:800;box-shadow:0 0 20px rgba(4,120,184,.35);}\n.bta-spotlight h3{font-family:var(--font);font-size:clamp(2.6rem,6vw,5rem);line-height:.95;text-transform:uppercase;margin:0 0 1.3rem;background:linear-gradient(135deg,var(--main1-glow),var(--main1-pale),var(--main2-pale));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;text-shadow:0 0 60px rgba(4,120,184,.3);letter-spacing:-.01em;}\n.bta-spotlight-lead{color:var(--chrome);font-size:clamp(1.15rem,2vw,1.5rem);line-height:1.65;margin:0 0 1.2rem;max-width:960px;font-weight:500;}\n.bta-spotlight-lead strong{color:var(--main1-pale);}\n.bta-spotlight-sub{color:var(--text-dim);font-size:1.02rem;line-height:1.8;margin:0 0 2rem;max-width:960px;}\n.bta-spotlight-sub strong{color:var(--main2-pale);}\n.bta-spotlight-metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;}\n.bta-spotlight-metric{background:rgba(255,255,255,.03);border:1px solid rgba(4,120,184,.18);border-radius:12px;padding:1.4rem 1.2rem;text-align:center;transition:all .4s;}\n.bta-spotlight-metric:hover{border-color:rgba(4,120,184,.45);box-shadow:0 0 24px rgba(4,120,184,.12);transform:translateY(-4px);}\n.bta-spotlight-metric .m-num{display:block;font-family:var(--font);font-size:1.5rem;color:var(--main1-bright);text-shadow:0 0 14px rgba(4,120,184,.35);margin-bottom:.4rem;line-height:1.1;}\n.bta-spotlight-metric .m-label{display:block;font-size:.74rem;color:var(--text-dim);text-transform:uppercase;letter-spacing:.1em;line-height:1.4;}\n@media(max-width:768px){.bta-spotlight-inner{padding:2rem 1.5rem;}.bta-spotlight-metrics{grid-template-columns:1fr 1fr;}}\n\n\/* Diff cards *\/\n.bta-diff-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:22px;margin-top:2rem;}\n.bta-diff-card{position:relative;background:linear-gradient(165deg,rgba(4,120,184,.03),rgba(255,255,255,.01));border:1px solid rgba(4,120,184,.08);border-radius:16px;padding:2.2rem;transition:all .5s cubic-bezier(.23,1,.32,1);overflow:hidden;cursor:default;}\n.bta-diff-card::before{content:\"\";position:absolute;inset:0;border-radius:16px;background:radial-gradient(600px circle at var(--mx,50%) var(--my,50%),rgba(4,120,184,.08),transparent 40%);opacity:0;transition:opacity .4s;pointer-events:none;z-index:1;}\n.bta-diff-card:hover::before{opacity:1;}\n.bta-diff-card:hover{transform:translateY(-8px);box-shadow:0 30px 80px rgba(0,0,0,.6),0 0 40px rgba(4,120,184,.08),0 0 15px rgba(216,224,234,.05);border-color:rgba(4,120,184,.2);}\n.bta-diff-card::after{content:\"\";position:absolute;left:0;right:0;bottom:0;height:2px;background:linear-gradient(90deg,var(--main2-bright),var(--main1-bright),var(--main1-pale));opacity:.5;}\n.bta-diff-card .bta-icon{font-size:2.6rem;display:block;margin-bottom:1rem;position:relative;z-index:2;color:var(--chrome);text-shadow:0 0 18px rgba(4,120,184,.5);}\n.bta-diff-card h3{font-family:var(--font);font-size:1.2rem;color:var(--main1-bright)!important;margin-bottom:.6rem;letter-spacing:.02em;position:relative;z-index:2;text-transform:uppercase;}\n.bta-diff-card p{margin:0;color:var(--text-dim);line-height:1.75;font-size:.95rem;position:relative;z-index:2;}\n.bta-diff-card p strong{color:var(--chrome);}\n\n\/* Features grid *\/\n.bta-feat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px;margin-top:2rem;}\n.bta-feat-card{background:var(--glass);border:1px solid var(--glass-border);border-radius:12px;padding:1.8rem;transition:all .4s;}\n.bta-feat-card:hover{transform:translateY(-4px);border-color:rgba(4,120,184,.25);box-shadow:0 0 24px rgba(4,120,184,.08);}\n.bta-feat-card h4{font-family:var(--font);color:var(--main1-pale)!important;font-size:1.1rem;text-transform:uppercase;margin-bottom:.5rem;letter-spacing:.02em;}\n.bta-feat-card p{color:var(--text-dim);font-size:.95rem;line-height:1.7;margin:0;}\n.bta-feat-card p strong{color:var(--chrome);}\n\n\/* Variant panels *\/\n.bta-variant-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-top:2rem;}\n.bta-variant-card{position:relative;border-radius:16px;padding:1.8rem;transition:all .4s;overflow:hidden;border:1px solid rgba(255,255,255,.08);}\n.bta-variant-card--25{background:linear-gradient(165deg,rgba(16,185,129,.08),rgba(2,10,16,.95));border-color:rgba(16,185,129,.25);}\n.bta-variant-card--25:hover{box-shadow:0 0 30px rgba(16,185,129,.15);border-color:rgba(16,185,129,.45);}\n.bta-variant-card--38{background:linear-gradient(165deg,rgba(6,182,212,.08),rgba(2,10,16,.95));border-color:rgba(6,182,212,.25);}\n.bta-variant-card--38:hover{box-shadow:0 0 30px rgba(6,182,212,.15);border-color:rgba(6,182,212,.45);}\n.bta-variant-card--50{background:linear-gradient(165deg,rgba(244,63,94,.08),rgba(2,10,16,.95));border-color:rgba(244,63,94,.25);}\n.bta-variant-card--50:hover{box-shadow:0 0 30px rgba(244,63,94,.15);border-color:rgba(244,63,94,.45);}\n.bta-variant-title{display:flex;align-items:center;gap:.6rem;font-family:var(--font);font-size:1.4rem;text-transform:uppercase;margin-bottom:.5rem;}\n.bta-variant-title--25{color:var(--var-25mm2)!important;}\n.bta-variant-title--38{color:var(--var-38mm2)!important;}\n.bta-variant-title--50{color:var(--var-50mm2)!important;}\n.bta-variant-pill{font-family:var(--font);font-size:.55rem;letter-spacing:.1em;text-transform:uppercase;padding:.15rem .5rem;border-radius:4px;background:rgba(255,255,255,.1);color:var(--text-dim);}\n.bta-variant-desc{color:var(--text-dim);font-size:.95rem;line-height:1.7;margin:0 0 1rem;}\n.bta-variant-spec{display:flex;gap:1rem;flex-wrap:wrap;font-size:.82rem;color:var(--chrome);}\n.bta-variant-spec span{background:rgba(255,255,255,.05);padding:.3rem .7rem;border-radius:20px;font-family:var(--font-mono);}\n\n\/* Strain chips *\/\n.bta-strain-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:1.5rem;}\n.bta-strain-chip{font-family:var(--font-mono);font-size:.82rem;color:var(--main2-pale);background:rgba(216,224,234,.05);border:1px solid rgba(216,224,234,.2);border-radius:40px;padding:.5rem 1.1rem;transition:all .3s;}\n.bta-strain-chip:hover{background:rgba(216,224,234,.12);border-color:rgba(216,224,234,.45);color:var(--main2-highlight);transform:translateY(-2px);}\n\n\/* Quick guide *\/\n.bta-quick-section{background:transparent;padding:120px 0;}\n.bta-quick-guide{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;margin-top:2.5rem;}\n.bta-guide-step{position:relative;background:transparent;border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:2.2rem;transition:all .4s;}\n.bta-guide-step:hover{transform:translateY(-6px);border-color:rgba(4,120,184,.3);}\n.bta-guide-num{font-family:var(--font);font-size:3.6rem;color:var(--purple-bright);line-height:1;text-shadow:0 0 20px rgba(147,51,234,.4);}\n.bta-guide-step-icon{width:64px;height:64px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.8rem;margin:1rem 0;color:#fff;}\n.bta-guide-step-icon--main1{background:linear-gradient(135deg,var(--main1-deep),var(--main1-mid),var(--main1-bright));box-shadow:var(--glow-main1);}\n.bta-guide-step-icon--main2{background:linear-gradient(135deg,var(--main2-deep),var(--main2-mid),var(--main2-bright));box-shadow:var(--glow-main2);}\n.bta-guide-step-icon--purple{background:linear-gradient(135deg,var(--purple-deep),var(--purple-mid),var(--purple-bright));box-shadow:var(--glow-purple);}\n.bta-guide-step-icon--gold{background:linear-gradient(135deg,var(--gold-deep),var(--gold),var(--gold-bright));box-shadow:var(--glow-gold);}\n.bta-guide-step h4{font-family:var(--font);font-size:1.3rem;color:#fff;text-transform:uppercase;margin-bottom:.5rem;}\n.bta-guide-step p{color:#d0d8e0;font-size:.98rem;line-height:1.8;margin:0;}\n.bta-key{font-family:var(--font-mono);background:rgba(255,255,255,.08);border-radius:4px;padding:.1rem .45rem;color:var(--main1-pale);}\n\n\/* Table *\/\n.bta-table-wrap{position:relative;margin:1.5rem 0;border-radius:16px;overflow:hidden;}\n.bta-table-wrap::before{content:\"\";position:absolute;inset:0;border-radius:16px;padding:1px;background:linear-gradient(135deg,rgba(4,120,184,.4),rgba(216,224,234,.25),rgba(147,51,234,.35),rgba(0,229,255,.15),rgba(4,120,184,.4));background-size:300% 300%;-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;z-index:3;animation:holographic-shift 6s linear infinite;}\n@keyframes holographic-shift{0%{background-position:0% 50%;}50%{background-position:100% 50%;}100%{background-position:0% 50%;}}\n.bta-table{width:100%;border-collapse:collapse;background:linear-gradient(180deg,rgba(12,31,51,.95),rgba(2,10,16,.97));min-width:600px;position:relative;z-index:2;font-size:.92rem;}\n.bta-table thead{background:linear-gradient(90deg,rgba(12,31,51,.8),rgba(2,10,16,.7),rgba(12,31,51,.8));position:relative;}\n.bta-table thead::after{content:\"\";position:absolute;bottom:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--main2-bright),var(--main1-bright),var(--main1-pale));}\n.bta-table th{font-family:var(--font);font-size:.75rem;text-transform:uppercase;letter-spacing:.12em;padding:1.3rem 1.1rem;text-align:left;color:var(--main1-pale);text-shadow:0 0 12px rgba(4,120,184,.2);border-bottom:none;}\n.bta-table td{padding:1.1rem;color:var(--text);border-bottom:1px solid rgba(4,120,184,.06);transition:all .25s;}\n.bta-table .bta-model{font-family:var(--font);color:var(--main1-bright);font-weight:700;letter-spacing:.03em;}\n.bta-table .bta-highlight{color:var(--cyan-energy);font-family:var(--font-mono);}\n.bta-table .bta-muted{color:var(--text-dim);font-size:.88em;}\n.bta-table tbody tr{transition:all .25s;}\n.bta-table tbody tr:hover{background:rgba(4,120,184,.06);}\n.bta-table tbody tr:hover td{color:#fff;}\n.bta-table-note{font-size:.82em;color:var(--text-dim);line-height:1.6;margin-top:.75rem;text-align:right;}\n\n\/* FAQ *\/\n.bta-faq-item{border-bottom:1px solid rgba(4,120,184,.08);padding:1.25rem 0;transition:all .3s;}\n.bta-faq-item:hover{background:rgba(4,120,184,.02);padding-left:.5rem;}\n.bta-faq-item:last-child{border-bottom:none;}\n.bta-faq-q{font-size:.98em;font-weight:700;color:var(--chrome);margin-bottom:.5rem;display:flex;gap:10px;align-items:flex-start;}\n.bta-faq-q .bta-qm{color:var(--main1-bright);font-family:var(--font);font-weight:900;font-size:1.1em;flex-shrink:0;}\n.bta-faq-a{color:var(--text-dim);font-size:.94em;line-height:1.8;padding-left:1.375rem;}\n.bta-faq-a strong{color:var(--main1-pale);}\n\n\/* CTA *\/\n.bta-cta-dark{position:relative;text-align:center;padding:140px 20px 130px;overflow:hidden;background:var(--void);}\n.bta-cta-dark::before{content:\"\";position:absolute;inset:0;background:radial-gradient(ellipse 800px 400px at 50% 50%,rgba(4,120,184,.06),transparent 60%),radial-gradient(ellipse 600px 300px at 50% 50%,rgba(216,224,234,.03),transparent 50%);}\n.bta-cta-vortex{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:600px;height:600px;border-radius:50%;border:1px solid rgba(4,120,184,.05);animation:vortex-spin 30s linear infinite;}\n.bta-cta-vortex:nth-child(2){width:450px;height:450px;border-color:rgba(216,224,234,.05);animation-direction:reverse;animation-duration:25s;}\n@keyframes vortex-spin{to{transform:translate(-50%,-50%) rotate(360deg);}}\n.bta-cta-dark .bta-wrap{position:relative;z-index:2;}\n.bta-cta-dark .bta-section-title{margin-bottom:1.5rem;text-align:center;}\n.bta-cta-dark p{color:var(--text-dim);max-width:650px;margin:0 auto;font-size:1.08rem;line-height:1.85;}\n.bta-btn{display:inline-block;font-family:var(--font);font-size:.85rem;letter-spacing:.14em;text-transform:uppercase;padding:1rem 2.5rem;background:linear-gradient(135deg,var(--main1-bright),var(--main1-pale));color:var(--void);border-radius:4px;transition:all .3s;position:relative;overflow:hidden;font-weight:700;}\n.bta-btn:hover{box-shadow:0 0 40px rgba(4,120,184,.4);transform:translateY(-2px);}\n.bta-btn::after{content:\"\";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);transition:left .5s;}\n.bta-btn:hover::after{left:100%;}\n.bta-ghost-btn{display:inline-block;font-family:var(--font);font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:var(--chrome);border:1px solid rgba(4,120,184,.3);padding:.85rem 2rem;border-radius:4px;transition:all .3s;}\n.bta-ghost-btn:hover{background:rgba(4,120,184,.05);border-color:var(--main1-bright);color:var(--main1-bright);box-shadow:0 0 20px rgba(4,120,184,.15);}\n.bta-cta-btns{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-top:2rem;}\n\n\/* First image only *\/\n.card__inner .media--hover-effect \u003e img:first-child,.card__media .media--hover-effect \u003e img:first-child,.card-wrapper .media--hover-effect \u003e img:first-child{opacity:1!important;visibility:visible!important;position:relative!important;z-index:2!important;}\n.card__inner .media--hover-effect \u003e img:nth-child(2),.card__media .media--hover-effect \u003e img:nth-child(2),.card-wrapper .media--hover-effect \u003e img:nth-child(2),.card-wrapper:hover .media--hover-effect \u003e img:last-child,.card-wrapper:hover .media--hover-effect \u003e img:nth-child(2){display:none!important;opacity:0!important;visibility:hidden!important;}\n\n\/* Responsive *\/\n@media(max-width:768px){.bta-wrap{padding:0 1.5rem;}.bta-page-hero .bta-wrap{flex-direction:column;text-align:center;min-height:auto;padding:4rem 1.5rem;}.bta-hero-left{flex:1;text-align:center;}.bta-hero-right{display:none;}.bta-h2,.bta-section-title{text-align:center;font-size:clamp(2rem,7vw,3rem);}.bta-page-hero-sub{text-align:center;margin:0 auto;}.bta-kicker{margin-left:auto;margin-right:auto;display:table;}.bta-diff-grid,.bta-feat-grid,.bta-variant-grid,.bta-quick-guide{grid-template-columns:1fr;}.bta-table{min-width:600px;}.bta-strip{clip-path:none;padding:2.5rem 2rem;margin-bottom:0;}.bta-section--angle{clip-path:none;padding-top:80px;margin-top:0;}.bta-trust-row{flex-direction:column;}}\n\n\/* List reset safety *\/\n.bta-pg ul,.bta-pg ol,.bta-pg li,.bta-pg ul li,.bta-pg ol li,.bta-diff-card ul,.bta-diff-card ol,.bta-diff-card li,.bta-feat-card ul,.bta-feat-card ol,.bta-feat-card li{list-style:none!important;list-style-type:none!important;list-style-image:none!important;counter-reset:none!important;counter-increment:none!important;padding-left:0!important;margin-left:0!important;}\n.bta-diff-card h3,.bta-feat-card h4{color:#fff!important;}\n\u003c\/style\u003e\n\n\u003cscript\u003e\n(function(){var e=function(){document.querySelectorAll('.card-wrapper .media--hover-effect, .grid__item .card-wrapper .media--hover-effect').forEach(function(w){var i=w.querySelectorAll('img');if(i.length\u003e1){i[0].style.cssText='opacity:1!important;visibility:visible!important;position:relative!important;z-index:2!important';for(var r=1;r\u003ci.length;r++)i[r].style.cssText='display:none!important;opacity:0!important;visibility:hidden!important'}})};e();['DOMContentLoaded','shopify:section:load','load'].forEach(function(ev){document.addEventListener(ev,e)});setTimeout(e,500);setTimeout(e,1500);setTimeout(e,3000)})})();\n\u003c\/script\u003e\n\n\u003cdiv class=\"bta-pg\"\u003e\n\n\u003c!-- ═════════════════ HERO ═════════════════ --\u003e\n\u003csection class=\"bta-page-hero\"\u003e\n  \u003cdiv class=\"bta-wrap\"\u003e\n    \u003cdiv class=\"bta-hero-left\"\u003e\n      \u003cspan class=\"bta-kicker\"\u003eHDPE Biological Filtration Media\u003c\/span\u003e\u003cbr\u003e\n      \u003ch1 class=\"bta-h2\" style=\"font-size:clamp(3.2rem,8vw,7rem);line-height:.9;\"\u003eBTA \u003cspan class=\"main1\"\u003eBioballs\u003c\/span\u003e\n\u003c\/h1\u003e\n      \u003cp class=\"bta-page-hero-sub\"\u003ePrecision-moulded HDPE bioballs for \u003cstrong style=\"color:var(--main1-pale)\"\u003etrickle filters, sumps and high-flow biological systems\u003c\/strong\u003e. Three sizes, one purpose: maximum surface area, minimum restriction.\u003c\/p\u003e\n      \u003cdiv class=\"bta-sensei\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/5200\/4338\/files\/Bioball.jpg?v=1737949504\" alt=\"BTA HDPE Bioballs - virgin plastic biological filtration media in 25mm, 38mm and 50mm sizes\" width=\"560\" height=\"560\" fetchpriority=\"high\" decoding=\"async\" onerror=\"this.src='https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/5200\/4338\/files\/Bioball.jpg';this.onerror=null;\"\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"bta-hero-right\"\u003e\n      \u003cdiv class=\"bta-prism-ring\"\u003e\u003c\/div\u003e\n      \u003cdiv class=\"bta-prism-ring\"\u003e\u003c\/div\u003e\n      \u003cdiv class=\"bta-prism-ring\"\u003e\u003c\/div\u003e\n      \u003cdiv class=\"bta-stat-capsule\"\u003e\n\u003cspan class=\"bta-stat-num\"\u003e25–50 mm\u003c\/span\u003e\u003cspan class=\"bta-stat-label\"\u003eThree Sizes\u003c\/span\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"bta-stat-capsule\"\u003e\n\u003cspan class=\"bta-stat-num\"\u003eHDPE\u003c\/span\u003e\u003cspan class=\"bta-stat-label\"\u003eVirgin Plastic\u003c\/span\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"bta-stat-capsule\"\u003e\n\u003cspan class=\"bta-stat-num\"\u003ePIAA\u003c\/span\u003e\u003cspan class=\"bta-stat-label\"\u003eMember\u003c\/span\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"bta-stat-capsule\"\u003e\n\u003cspan class=\"bta-stat-num\"\u003eTrade\u003c\/span\u003e\u003cspan class=\"bta-stat-label\"\u003ePricing\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- ═════════════════ ANNOUNCEMENT ═════════════════ --\u003e\n\u003csection class=\"bta-announce\"\u003e\n  \u003cdiv class=\"bta-wrap\"\u003e\n    \u003cdiv class=\"bta-announce-row\"\u003e\n\u003cspan class=\"bta-badge bta-badge-new\"\u003eAUSSIE OWNED\u003c\/span\u003e Designed for Australian aquaculture, ponds and aquarium filtration\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"bta-wrap\" style=\"margin-top:1.3rem;\"\u003e\n    \u003cdiv class=\"bta-announce-row\"\u003e\n\u003cspan class=\"bta-badge bta-badge-feat\"\u003e3 SIZES\u003c\/span\u003e 25mm, 38mm and 50mm to match your flow and loading\u003c\/div\u003e\n    \u003cdiv class=\"bta-announce-row\" style=\"margin-top:.8rem;\"\u003e\n\u003cspan class=\"bta-badge bta-badge-cold\"\u003eBULK\u003c\/span\u003e Sold per-litre, per-bag or by pallet for trade\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- ═════════════════ TRUST + INTRO STRIP ═════════════════ --\u003e\n\u003cdiv class=\"bta-wrap\" style=\"padding-top:3rem;padding-bottom:2rem;\"\u003e\n  \u003cdiv class=\"bta-trust-row\"\u003e\n    \u003cdiv class=\"bta-trust-badge\"\u003e\n\u003cspan class=\"bta-tick\"\u003e✓\u003c\/span\u003e Virgin HDPE Construction\u003c\/div\u003e\n    \u003cdiv class=\"bta-trust-badge\"\u003e\n\u003cspan class=\"bta-tick\"\u003e✓\u003c\/span\u003e 25 \/ 38 \/ 50 mm Sizes\u003c\/div\u003e\n    \u003cdiv class=\"bta-trust-badge\"\u003e\n\u003cspan class=\"bta-tick\"\u003e✓\u003c\/span\u003e High Surface-to-Void Ratio\u003c\/div\u003e\n    \u003cdiv class=\"bta-trust-badge\"\u003e\n\u003cspan class=\"bta-tick\"\u003e✓\u003c\/span\u003e Self-Cleaning Geometry\u003c\/div\u003e\n    \u003cdiv class=\"bta-trust-badge\"\u003e\n\u003cspan class=\"bta-tick\"\u003e✓\u003c\/span\u003e FW \/ BW \/ Marine Safe\u003c\/div\u003e\n    \u003cdiv class=\"bta-trust-badge\"\u003e\n\u003cspan class=\"bta-tick\"\u003e✓\u003c\/span\u003e PIAA Member\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"bta-strip\"\u003e\n    BTA HDPE Bioballs are the filtration upgrade when \u003cem\u003esurface area, void space and self-cleaning behaviour\u003c\/em\u003e matter most. The open, lattice design lets water pass through freely while providing protected pockets for nitrifying bacteria to colonise — making them ideal for \u003cstrong\u003etrickle towers, shower filters, sumps and high-flow recirculating systems\u003c\/strong\u003e.\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═════════════════ THE DIFFERENCE ═════════════════ --\u003e\n\u003csection class=\"bta-section-dark\"\u003e\n  \u003cdiv class=\"bta-wrap\"\u003e\n    \u003cspan class=\"bta-section-label\"\u003eWhy BTA Bioballs Are Different\u003c\/span\u003e\n    \u003ch2 class=\"bta-section-title\"\u003eSurface Area. \u003cspan class=\"main1\"\u003eZero Compromise.\u003c\/span\u003e\n\u003c\/h2\u003e\n    \u003cp class=\"bta-section-intro\"\u003eNot all bioballs are created equal. BTA balls use a high-grade HDPE lattice that maximises useful surface area without choking flow or trapping solids.\u003c\/p\u003e\n\n    \u003c!-- SPOTLIGHT --\u003e\n    \u003cdiv class=\"bta-spotlight\"\u003e\n      \u003cdiv class=\"bta-spotlight-inner\"\u003e\n        \u003cspan class=\"bta-spotlight-flag\"\u003eThe Core Principle\u003c\/span\u003e\n        \u003ch3\u003eFlow-Through Filtration Media\u003c\/h3\u003e\n        \u003cp class=\"bta-spotlight-lead\"\u003eBTA Bioballs are engineered to give \u003cstrong\u003ebacteria a home and water a highway\u003c\/strong\u003e. The open geometry prevents dead zones and clogging while exposing biofilm to oxygen, ammonia and organic waste in constant motion.\u003c\/p\u003e\n        \u003cp class=\"bta-spotlight-sub\"\u003eAvailable in three diameters, each ball keeps a high internal surface area while leaving plenty of void space for turbulence, gas exchange and solids flushing — critical in trickle filters, sumps and high-turnover RAS systems.\u003c\/p\u003e\n        \u003cdiv class=\"bta-spotlight-metrics\"\u003e\n          \u003cdiv class=\"bta-spotlight-metric\"\u003e\n\u003cspan class=\"m-num\"\u003e25 mm\u003c\/span\u003e\u003cspan class=\"m-label\"\u003eSmall \/ High Density\u003c\/span\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"bta-spotlight-metric\"\u003e\n\u003cspan class=\"m-num\"\u003e38 mm\u003c\/span\u003e\u003cspan class=\"m-label\"\u003eAll-Rounder\u003c\/span\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"bta-spotlight-metric\"\u003e\n\u003cspan class=\"m-num\"\u003e50 mm\u003c\/span\u003e\u003cspan class=\"m-label\"\u003eHigh Flow \/ Low Shear\u003c\/span\u003e\n\u003c\/div\u003e\n          \u003cdiv class=\"bta-spotlight-metric\"\u003e\n\u003cspan class=\"m-num\"\u003eHDPE\u003c\/span\u003e\u003cspan class=\"m-label\"\u003eVirgin Polyethylene\u003c\/span\u003e\n\u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"bta-diff-grid\"\u003e\n      \u003cdiv class=\"bta-diff-card\"\u003e\n        \u003cdiv class=\"bta-icon\"\u003e🌊\u003c\/div\u003e\n        \u003ch3\u003eHigh Void Space\u003c\/h3\u003e\n        \u003cp\u003eOpen-lattice construction keeps \u003cstrong\u003echannels clear for water flow\u003c\/strong\u003e, oxygen penetration and solids flushing. Reduces clogging compared to dense foam or mat media.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"bta-diff-card\"\u003e\n        \u003cdiv class=\"bta-icon\"\u003e🧬\u003c\/div\u003e\n        \u003ch3\u003eBiofilm Friendly\u003c\/h3\u003e\n        \u003cp\u003eProtected internal struts give nitrifying bacteria a stable surface to colonise while the outer turbulence \u003cstrong\u003estrips away excess biomass\u003c\/strong\u003e naturally.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"bta-diff-card\"\u003e\n        \u003cdiv class=\"bta-icon\"\u003e💪\u003c\/div\u003e\n        \u003ch3\u003eBuilt to Last\u003c\/h3\u003e\n        \u003cp\u003eVirgin HDPE resists UV, salt, acids and mechanical wear. \u003cstrong\u003eNo crumbling, no breakdown, no clouding tanks\u003c\/strong\u003e — even after years of continuous use.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"bta-diff-card\"\u003e\n        \u003cdiv class=\"bta-icon\"\u003e🔄\u003c\/div\u003e\n        \u003ch3\u003eSelf-Cleaning Geometry\u003c\/h3\u003e\n        \u003cp\u003eRounded surfaces and open-water channels let detritus wash through rather than settle, \u003cstrong\u003ecutting maintenance and backwash frequency\u003c\/strong\u003e.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"bta-diff-card\"\u003e\n        \u003cdiv class=\"bta-icon\"\u003e🐟\u003c\/div\u003e\n        \u003ch3\u003eEvery System Type\u003c\/h3\u003e\n        \u003cp\u003eFreshwater, brackish and fully marine. Drop into \u003cstrong\u003etrickle towers, shower filters, sump reactors, static-bed biofilters and drum-filter sumps\u003c\/strong\u003e.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"bta-diff-card\"\u003e\n        \u003cdiv class=\"bta-icon\"\u003e📦\u003c\/div\u003e\n        \u003ch3\u003eBulk or Retail\u003c\/h3\u003e\n        \u003cp\u003eSold by the litre, pre-bagged or palletised. \u003cstrong\u003eTrade pricing\u003c\/strong\u003e available for retailers, installers and commercial facilities.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- ═════════════════ VARIANTS \/ SPECS ═════════════════ --\u003e\n\u003csection class=\"bta-section bta-section--angle\"\u003e\n  \u003cdiv class=\"bta-wrap\"\u003e\n    \u003cspan class=\"bta-section-label\"\u003eSizes \u0026amp; Specifications\u003c\/span\u003e\n    \u003ch2 class=\"bta-section-title\"\u003ePick Your \u003cspan class=\"main1\"\u003eDiameter\u003c\/span\u003e\n\u003c\/h2\u003e\n    \u003cp class=\"bta-section-intro\"\u003eThree standard sizes cover everything from compact aquarium sumps to large aquaculture trickle towers. Match the size to your flow rate, bio-load and available headroom.\u003c\/p\u003e\n\n    \u003cdiv class=\"bta-variant-grid\"\u003e\n      \u003cdiv class=\"bta-variant-card bta-variant-card--25\"\u003e\n        \u003cdiv class=\"bta-variant-title bta-variant-title--25\"\u003e\n          \u003cspan\u003e25 mm Bioball\u003c\/span\u003e\n          \u003cspan class=\"bta-variant-pill\"\u003eHigh Density\u003c\/span\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"bta-variant-spec\"\u003e\n          \u003cspan\u003e25 mm Ø\u003c\/span\u003e\n          \u003cspan\u003eHigh surface area\u003c\/span\u003e\n          \u003cspan\u003eSmall sumps\u003c\/span\u003e\n        \u003c\/div\u003e\n        \u003cp class=\"bta-variant-desc\"\u003eThe compact choice where space is limited and contact time needs to be maximised. Great for aquarium sumps, small ponds and benchtop biofilters.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"bta-variant-card bta-variant-card--38\"\u003e\n        \u003cdiv class=\"bta-variant-title bta-variant-title--38\"\u003e\n          \u003cspan\u003e38 mm Bioball\u003c\/span\u003e\n          \u003cspan class=\"bta-variant-pill\"\u003eAll-Rounder\u003c\/span\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"bta-variant-spec\"\u003e\n          \u003cspan\u003e38 mm Ø\u003c\/span\u003e\n          \u003cspan\u003eBalanced flow\u003c\/span\u003e\n          \u003cspan\u003eMost popular\u003c\/span\u003e\n        \u003c\/div\u003e\n        \u003cp class=\"bta-variant-desc\"\u003eThe Goldilocks size for ponds, aquaculture systems and mid-flow trickle towers. A proven balance of surface area, void space and self-cleaning.\u003c\/p\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv class=\"bta-variant-card bta-variant-card--50\"\u003e\n        \u003cdiv class=\"bta-variant-title bta-variant-title--50\"\u003e\n          \u003cspan\u003e50 mm Bioball\u003c\/span\u003e\n          \u003cspan class=\"bta-variant-pill\"\u003eHigh Flow\u003c\/span\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"bta-variant-spec\"\u003e\n          \u003cspan\u003e50 mm Ø\u003c\/span\u003e\n          \u003cspan\u003eMaximum void\u003c\/span\u003e\n          \u003cspan\u003eLow shear\u003c\/span\u003e\n        \u003c\/div\u003e\n        \u003cp class=\"bta-variant-desc\"\u003eLarger footprint for high-flow towers and low-maintenance commercial systems. Handles heavy hydraulic loads and coarse solids better than smaller media.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"bta-strain-row\"\u003e\n      \u003cspan class=\"bta-strain-chip\"\u003eTrickle Filters\u003c\/span\u003e\n      \u003cspan class=\"bta-strain-chip\"\u003eShower Filters\u003c\/span\u003e\n      \u003cspan class=\"bta-strain-chip\"\u003eSump Reactors\u003c\/span\u003e\n      \u003cspan class=\"bta-strain-chip\"\u003eStatic Beds\u003c\/span\u003e\n      \u003cspan class=\"bta-strain-chip\"\u003eAquaculture\u003c\/span\u003e\n      \u003cspan class=\"bta-strain-chip\"\u003ePonds\u003c\/span\u003e\n      \u003cspan class=\"bta-strain-chip\"\u003eMarine\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"bta-feat-grid\" style=\"margin-top:2.5rem;\"\u003e\n      \u003cdiv class=\"bta-feat-card\"\u003e\n        \u003ch4\u003eMaterial\u003c\/h4\u003e\n        \u003cp\u003eHigh-Density Polyethylene (HDPE), \u003cstrong\u003evirgin grade\u003c\/strong\u003e. Resists UV breakdown and saltwater attack.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"bta-feat-card\"\u003e\n        \u003ch4\u003eGeometry\u003c\/h4\u003e\n        \u003cp\u003eOpen-lattice ball with rigid internal struts. Maximises \u003cstrong\u003esurface area and void fraction\u003c\/strong\u003e in one form.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"bta-feat-card\"\u003e\n        \u003ch4\u003eSizes Available\u003c\/h4\u003e\n        \u003cp\u003e\u003cstrong\u003e25 mm, 38 mm and 50 mm\u003c\/strong\u003e diameters. Choose by flow rate, bio-load and system volume.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"bta-feat-card\"\u003e\n        \u003ch4\u003eApplications\u003c\/h4\u003e\n        \u003cp\u003eFreshwater ponds, saltwater aquariums, \u003cstrong\u003eaquaculture RAS\u003c\/strong\u003e, quarantine systems and display tanks.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- ═════════════════ QUICK USE GUIDE ═════════════════ --\u003e\n\u003csection class=\"bta-section bta-quick-section\"\u003e\n  \u003cdiv class=\"bta-wrap\"\u003e\n    \u003cspan class=\"bta-section-label\"\u003eInstallation\u003c\/span\u003e\n    \u003ch2 class=\"bta-section-title\"\u003eFour Steps To A \u003cspan class=\"main1\"\u003eBetter Biofilter\u003c\/span\u003e\n\u003c\/h2\u003e\n    \u003cdiv class=\"bta-quick-guide\"\u003e\n      \u003cdiv class=\"bta-guide-step\"\u003e\n        \u003cdiv class=\"bta-guide-num\"\u003e01\u003c\/div\u003e\n        \u003cdiv class=\"bta-guide-step-icon bta-guide-step-icon--main1\"\u003e📐\u003c\/div\u003e\n        \u003ch4\u003eMeasure Volume\u003c\/h4\u003e\n        \u003cp\u003eCalculate the empty chamber volume. Typical bioball fill is \u003cspan class=\"bta-key\"\u003e50–80%\u003c\/span\u003e of the chamber, leaving headroom for water to fall and mix.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"bta-guide-step\"\u003e\n        \u003cdiv class=\"bta-guide-num\"\u003e02\u003c\/div\u003e\n        \u003cdiv class=\"bta-guide-step-icon bta-guide-step-icon--main2\"\u003e🌊\u003c\/div\u003e\n        \u003ch4\u003eLoad By Size\u003c\/h4\u003e\n        \u003cp\u003eUse \u003cspan class=\"bta-key\"\u003e25 mm\u003c\/span\u003e in compact sumps, \u003cspan class=\"bta-key\"\u003e38 mm\u003c\/span\u003e for general ponds\/RAS, and \u003cspan class=\"bta-key\"\u003e50 mm\u003c\/span\u003e in high-flow towers or low-shear zones.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"bta-guide-step\"\u003e\n        \u003cdiv class=\"bta-guide-num\"\u003e03\u003c\/div\u003e\n        \u003cdiv class=\"bta-guide-step-icon bta-guide-step-icon--purple\"\u003e🧬\u003c\/div\u003e\n        \u003ch4\u003eSeed The Bed\u003c\/h4\u003e\n        \u003cp\u003eAllow natural colonisation, or accelerate startup with \u003cspan class=\"bta-key\"\u003eNitroplex\u003c\/span\u003e or a mature bio-media transfer.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"bta-guide-step\"\u003e\n        \u003cdiv class=\"bta-guide-num\"\u003e04\u003c\/div\u003e\n        \u003cdiv class=\"bta-guide-step-icon bta-guide-step-icon--gold\"\u003e🔁\u003c\/div\u003e\n        \u003ch4\u003eMaintain Flow\u003c\/h4\u003e\n        \u003cp\u003eKeep water moving over the balls. Periodic rinsing in drained system water removes detritus without killing nitrifiers.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- ═════════════════ SIZING TABLE ═════════════════ --\u003e\n\u003csection class=\"bta-section\"\u003e\n  \u003cdiv class=\"bta-wrap\"\u003e\n    \u003cspan class=\"bta-section-label\"\u003eSizing Reference\u003c\/span\u003e\n    \u003ch2 class=\"bta-section-title\"\u003eWhich Size For \u003cspan class=\"main1\"\u003eYour System?\u003c\/span\u003e\n\u003c\/h2\u003e\n    \u003cp class=\"bta-section-intro\"\u003eUse this reference as a starting point. Exact quantities depend on fish load, feed rate and oxygen transfer efficiency.\u003c\/p\u003e\n    \u003cdiv class=\"bta-table-wrap\"\u003e\n      \u003ctable class=\"bta-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n          \u003cth\u003eSize\u003c\/th\u003e\n          \u003cth\u003eBest For\u003c\/th\u003e\n          \u003cth\u003ePackaging\u003c\/th\u003e\n          \u003cth\u003eNotes\u003c\/th\u003e\n        \u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n            \u003ctd class=\"bta-model\"\u003e25 mm Bioballs\u003c\/td\u003e\n            \u003ctd class=\"bta-highlight\"\u003eSmall sumps, nano tanks, benchtop filters\u003c\/td\u003e\n            \u003ctd\u003ePer litre \/ per bag\u003c\/td\u003e\n            \u003ctd class=\"bta-muted\"\u003eHighest surface-to-volume ratio; watch flow restriction\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003ctd class=\"bta-model\"\u003e38 mm Bioballs\u003c\/td\u003e\n            \u003ctd class=\"bta-highlight\"\u003ePonds, aquaculture, mid-flow systems\u003c\/td\u003e\n            \u003ctd\u003ePer litre \/ per bag \/ pallet\u003c\/td\u003e\n            \u003ctd class=\"bta-muted\"\u003eBest all-rounder for surface area vs. void\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003ctd class=\"bta-model\"\u003e50 mm Bioballs\u003c\/td\u003e\n            \u003ctd class=\"bta-highlight\"\u003eLarge towers, high-flow commercial systems\u003c\/td\u003e\n            \u003ctd\u003ePer litre \/ per bag \/ pallet\u003c\/td\u003e\n            \u003ctd class=\"bta-muted\"\u003eLowest pressure drop; easiest to keep clean\u003c\/td\u003e\n          \u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n    \u003cp class=\"bta-table-note\"\u003eHelpsheet: 100 L of void-chamber volume at 70% fill ≈ 70 L of bioballs. Contact us for pallet pricing and freight estimates.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- ═════════════════ FAQ ═════════════════ --\u003e\n\u003csection class=\"bta-section-dark\"\u003e\n  \u003cdiv class=\"bta-wrap\"\u003e\n    \u003cspan class=\"bta-section-label\"\u003eFAQ\u003c\/span\u003e\n    \u003ch2 class=\"bta-section-title\"\u003eFrequently Asked \u003cspan class=\"main1\"\u003eQuestions\u003c\/span\u003e\n\u003c\/h2\u003e\n    \u003cdiv style=\"max-width:800px;\"\u003e\n      \u003cdiv class=\"bta-faq-item\"\u003e\n        \u003cdiv class=\"bta-faq-q\"\u003e\n\u003cspan class=\"bta-qm\"\u003eQ\u003c\/span\u003e What size bioball should I use?\u003c\/div\u003e\n        \u003cdiv class=\"bta-faq-a\"\u003eChoose \u003cstrong\u003e25 mm\u003c\/strong\u003e for small sumps and compact filters, \u003cstrong\u003e38 mm\u003c\/strong\u003e for ponds and general aquaculture, and \u003cstrong\u003e50 mm\u003c\/strong\u003e for high-flow commercial towers where low restriction matters.\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"bta-faq-item\"\u003e\n        \u003cdiv class=\"bta-faq-q\"\u003e\n\u003cspan class=\"bta-qm\"\u003eQ\u003c\/span\u003e Are these safe for saltwater systems?\u003c\/div\u003e\n        \u003cdiv class=\"bta-faq-a\"\u003e\n\u003cstrong\u003eYes.\u003c\/strong\u003e Virgin HDPE is inert and highly resistant to saltwater, so our bioballs are suitable for marine aquariums, brackish systems and freshwater ponds.\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"bta-faq-item\"\u003e\n        \u003cdiv class=\"bta-faq-q\"\u003e\n\u003cspan class=\"bta-qm\"\u003eQ\u003c\/span\u003e How do I clean the balls?\u003c\/div\u003e\n        \u003cdiv class=\"bta-faq-a\"\u003eRinse lightly in drained system water to remove detritus. Avoid chlorinated tap water, aggressive acids or caustics that could kill the biofilm or degrade the HDPE.\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"bta-faq-item\"\u003e\n        \u003cdiv class=\"bta-faq-q\"\u003e\n\u003cspan class=\"bta-qm\"\u003eQ\u003c\/span\u003e How much media do I need?\u003c\/div\u003e\n        \u003cdiv class=\"bta-faq-a\"\u003eAim to fill roughly \u003cstrong\u003e50–80%\u003c\/strong\u003e of your filter chamber volume. The exact amount depends on bio-load, flow rate and oxygen availability. We're happy to help size it.\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"bta-faq-item\"\u003e\n        \u003cdiv class=\"bta-faq-q\"\u003e\n\u003cspan class=\"bta-qm\"\u003eQ\u003c\/span\u003e Is bulk \/ trade pricing available?\u003c\/div\u003e\n        \u003cdiv class=\"bta-faq-a\"\u003e\n\u003cstrong\u003eYes.\u003c\/strong\u003e We offer trade pricing for retailers, installers, aquaculture facilities and large pond builds. Contact us with your estimated volume for a quote.\u003c\/div\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"bta-faq-item\"\u003e\n        \u003cdiv class=\"bta-faq-q\"\u003e\n\u003cspan class=\"bta-qm\"\u003eQ\u003c\/span\u003e Are these suitable for biological filtration?\u003c\/div\u003e\n        \u003cdiv class=\"bta-faq-a\"\u003eAbsolutely. BTA Bioballs are designed to balance \u003cstrong\u003esurface area and void space\u003c\/strong\u003e for effective biological filtration while maintaining high hydraulic performance.\u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- ═════════════════ NOT SURE CTA ═════════════════ --\u003e\n\u003csection class=\"bta-section\" style=\"text-align:center;\"\u003e\n  \u003cdiv class=\"bta-wrap\"\u003e\n    \u003cp style=\"color:var(--text-dim);max-width:600px;margin:0 auto 2rem;font-size:1.08rem;line-height:1.8;\"\u003eNot sure what size or quantity you need? Our team can size your filter chamber, recommend fill rates and quote bulk orders.\u003c\/p\u003e\n    \u003cdiv class=\"bta-cta-btns\"\u003e\n      \u003ca href=\"\/pages\/contact\" class=\"bta-btn\"\u003eContact Our Team\u003c\/a\u003e\n      \u003ca href=\"\/collections\/filtration\" class=\"bta-ghost-btn\"\u003eView Filtration Collection\u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- ═════════════════ WHOLESALE CTA ═════════════════ --\u003e\n\u003csection class=\"bta-cta-dark\"\u003e\n  \u003cdiv class=\"bta-cta-vortex\"\u003e\u003c\/div\u003e\n  \u003cdiv class=\"bta-cta-vortex\"\u003e\u003c\/div\u003e\n  \u003cdiv class=\"bta-wrap\"\u003e\n    \u003ch2 class=\"bta-section-title\"\u003eWater \u003cspan class=\"main1\"\u003eDone\u003c\/span\u003e \u003cspan class=\"main2\"\u003eRight\u003c\/span\u003e\n\u003c\/h2\u003e\n    \u003cp\u003eBTA HDPE Bioballs — available in 25mm, 38mm, and 50mm. Trade pricing available for retailers, aquaculture facilities, and specialty stores. PIAA member.\u003c\/p\u003e\n    \u003cdiv class=\"bta-cta-btns\"\u003e\n      \u003ca href=\"\/products\/bta-hdpe-bioball\" class=\"bta-btn\"\u003eShop Bioballs\u003c\/a\u003e\n      \u003ca href=\"mailto:info@btaqua.com.au?subject=Wholesale%20Bioball%20Enquiry\" class=\"bta-ghost-btn\"\u003eWholesale Enquiry\u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003c!-- ═════════════════ JSON-LD SCHEMA ═════════════════ --\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"BTA HDPE Bioballs\",\n  \"image\": [\"https:\/\/cdn.shopify.com\/s\/files\/1\/0731\/5200\/4338\/files\/Bioball.jpg?v=1737949504\"],\n  \"description\": \"Virgin HDPE bioballs for trickle filters, sumps, ponds and aquaculture biological filtration. Available in 25mm, 38mm and 50mm sizes.\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Biotech Aquatica\"\n  },\n  \"manufacturer\": {\n    \"@type\": \"Organization\",\n    \"name\": \"Biotech Aquatica\",\n    \"address\": {\n      \"@type\": \"PostalAddress\",\n      \"addressCountry\": \"AU\"\n    }\n  },\n  \"material\": \"High-Density Polyethylene (HDPE)\",\n  \"audience\": {\n    \"@type\": \"Audience\",\n    \"audienceType\": \"Aquarists, pond owners, aquaculture operators and retailers\"\n  },\n  \"isRelatedTo\": {\n    \"@type\": \"Product\",\n    \"name\": \"Nitroplex\"\n  },\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"url\": \"{{ canonical_url }}\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"itemCondition\": \"https:\/\/schema.org\/NewCondition\",\n    \"priceValidUntil\": \"2027-07-08\",\n    \"priceCurrency\": \"AUD\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"Biotech Aquatica\"\n    }\n  }\n}\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What size bioball should I use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Choose 25 mm for small sumps and compact filters, 38 mm for ponds and general aquaculture, and 50 mm for high-flow commercial towers where low restriction matters.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these safe for saltwater systems?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Virgin HDPE is inert and highly resistant to saltwater, so our bioballs are suitable for marine aquariums, brackish systems and freshwater ponds.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I clean the balls?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Rinse lightly in drained system water to remove detritus. Avoid chlorinated tap water, aggressive acids or caustics that could kill the biofilm or degrade the HDPE.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How much media do I need?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Aim to fill roughly 50 to 80 percent of your filter chamber volume. The exact amount depends on bio-load, flow rate and oxygen availability.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is bulk \/ trade pricing available?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. We offer trade pricing for retailers, installers, aquaculture facilities and large pond builds. Contact us with your estimated volume for a quote.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these suitable for biological filtration?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Absolutely. BTA Bioballs are designed to balance surface area and void space for effective biological filtration while maintaining high hydraulic performance.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e\n\n\u003c\/div\u003e\n\u003c!-- End .bta-pg --\u003e","brand":"Biotech Aquatica ","offers":[{"title":"25mm Bioball per m3","offer_id":47246496825586,"sku":"","price":1800.0,"currency_code":"AUD","in_stock":true},{"title":"38mm Bioball per m3","offer_id":47246496858354,"sku":"","price":1710.0,"currency_code":"AUD","in_stock":true},{"title":"38mm Bioball per 100L","offer_id":47438182744306,"sku":"","price":150.0,"currency_code":"AUD","in_stock":true},{"title":"50mm Bioball per m3","offer_id":47246496891122,"sku":"","price":1650.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/5200\/4338\/files\/Bioball.jpg?v=1737949504","url":"https:\/\/www.btaqua.com.au\/products\/bta-hdpe-bioballs","provider":"Biotech Aquatica ","version":"1.0","type":"link"}