BTA HDPE Bioballs 25mm/38mm/50mm | Filtration Media | BTAqua
BTA HDPE Bioballs 25mm/38mm/50mm | Filtration Media | BTAqua
BTA Bioballs
Precision-moulded HDPE bioballs for trickle filters, sumps and high-flow biological systems. Three sizes, one purpose: maximum surface area, minimum restriction.
Surface Area. Zero Compromise.
Not all bioballs are created equal. BTA balls use a high-grade HDPE lattice that maximises useful surface area without choking flow or trapping solids.
Flow-Through Filtration Media
BTA Bioballs are engineered to give bacteria a home and water a highway. The open geometry prevents dead zones and clogging while exposing biofilm to oxygen, ammonia and organic waste in constant motion.
Available in three diameters, each ball keeps a high internal surface area while leaving plenty of void space for turbulence, gas exchange and solids flushing ā critical in trickle filters, sumps and high-turnover RAS systems.
High Void Space
Open-lattice construction keeps channels clear for water flow, oxygen penetration and solids flushing. Reduces clogging compared to dense foam or mat media.
Biofilm Friendly
Protected internal struts give nitrifying bacteria a stable surface to colonise while the outer turbulence strips away excess biomass naturally.
Built to Last
Virgin HDPE resists UV, salt, acids and mechanical wear. No crumbling, no breakdown, no clouding tanks ā even after years of continuous use.
Self-Cleaning Geometry
Rounded surfaces and open-water channels let detritus wash through rather than settle, cutting maintenance and backwash frequency.
Every System Type
Freshwater, brackish and fully marine. Drop into trickle towers, shower filters, sump reactors, static-bed biofilters and drum-filter sumps.
Bulk or Retail
Sold by the litre, pre-bagged or palletised. Trade pricing available for retailers, installers and commercial facilities.
Pick Your Diameter
Three 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.
The compact choice where space is limited and contact time needs to be maximised. Great for aquarium sumps, small ponds and benchtop biofilters.
The Goldilocks size for ponds, aquaculture systems and mid-flow trickle towers. A proven balance of surface area, void space and self-cleaning.
Larger footprint for high-flow towers and low-maintenance commercial systems. Handles heavy hydraulic loads and coarse solids better than smaller media.
Material
High-Density Polyethylene (HDPE), virgin grade. Resists UV breakdown and saltwater attack.
Geometry
Open-lattice ball with rigid internal struts. Maximises surface area and void fraction in one form.
Sizes Available
25 mm, 38 mm and 50 mm diameters. Choose by flow rate, bio-load and system volume.
Applications
Freshwater ponds, saltwater aquariums, aquaculture RAS, quarantine systems and display tanks.
Four Steps To A Better Biofilter
Measure Volume
Calculate the empty chamber volume. Typical bioball fill is 50ā80% of the chamber, leaving headroom for water to fall and mix.
Load By Size
Use 25 mm in compact sumps, 38 mm for general ponds/RAS, and 50 mm in high-flow towers or low-shear zones.
Seed The Bed
Allow natural colonisation, or accelerate startup with Nitroplex or a mature bio-media transfer.
Maintain Flow
Keep water moving over the balls. Periodic rinsing in drained system water removes detritus without killing nitrifiers.
Which Size For Your System?
Use this reference as a starting point. Exact quantities depend on fish load, feed rate and oxygen transfer efficiency.
| Size | Best For | Packaging | Notes |
|---|---|---|---|
| 25 mm Bioballs | Small sumps, nano tanks, benchtop filters | Per litre / per bag | Highest surface-to-volume ratio; watch flow restriction |
| 38 mm Bioballs | Ponds, aquaculture, mid-flow systems | Per litre / per bag / pallet | Best all-rounder for surface area vs. void |
| 50 mm Bioballs | Large towers, high-flow commercial systems | Per litre / per bag / pallet | Lowest pressure drop; easiest to keep clean |
Helpsheet: 100 L of void-chamber volume at 70% fill ā 70 L of bioballs. Contact us for pallet pricing and freight estimates.
Frequently Asked Questions
Not sure what size or quantity you need? Our team can size your filter chamber, recommend fill rates and quote bulk orders.
Water Done Right
BTA HDPE Bioballs ā available in 25mm, 38mm, and 50mm. Trade pricing available for retailers, aquaculture facilities, and specialty stores. PIAA member.
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