Micropore structure
More than 95% micropore volume is listed, with pores under 2 nm, supporting adsorption of smaller organic molecules.
CARBOX 830 | Coconut Shell Granular Activated Carbon | Biotech Aquatica
CARBOX 830 | Coconut Shell Granular Activated Carbon | Biotech Aquatica
Aquarium & aquaculture grade
CARBOX830
Coconut shell granular activated carbon for dissolved organics, colour, odour, chlorine, medication residues and other listed compounds in aquarium, aquaculture and water treatment systems.
100–200 mLdose per 100 L
1100–1150m²/g surface area
>95%micropore volume
8×30mesh size
Dose 100–200 mL / 100 LSteam activated1100–1150 m²/g total surface area8×30 mesh · 0.6–2.3 mm
✓ >95% micropore volume✓ 55% CTC activity✓ ≥98% hardness✓ Very low dust✓ Aquarium, aquaculture and water treatment
CARBOX 830 is a high-performance coconut shell granular activated carbon manufactured by high-temperature steam activation. Its listed micropore structure is intended for adsorption of small organic molecules associated with discolouration, odour and dissolved organic loading. The 8×30 mesh is suitable for media bags, fluidised reactors and pressurised filter housings.
Dose rate & usage
How much to use
100–200 mL
per 100 L of system water
General aquarium100–200 mL per 100 L
Post-medication cleanupUse for 48–72 h, then remove
Aquaculture / RASContact BTA for system-specific sizing
Media replacementEvery 4–8 weeks
Adjust within the range for bioload and water quality. Slower flow gives better adsorption.
The CARBOX 830 difference
Purpose-built carbon
High surface area
The product specification lists 1100–1150 m²/g total surface area measured by the N₂ BET method.
Hard, low-dust granules
At least 98% hardness and very low dust support cleaner handling and longer media-bed service between changes.
Technical features
What is inside
Surface area
1100–1150 m²/g by N₂ BET method.
Iodine number
≥1050 mg/g per ASTM D4607.
CTC activity
55% per ASTM D3467.
Hardness
≥98% per ASTM D3802.
Pore volume
0.45–0.5 cm³/g total pore volume, with more than 95% micropore volume.
Purity indicators
≤8% ash and ≤5% moisture under the listed test methods.
How to use
Five simple steps
- Rinse thoroughly. Flush with fresh water until it runs clear before first use.
- Dose it right. Add 100–200 mL per 100 L of system water as a general starting rate.
- Load the filter. Place in a media bag (500 μm mesh or finer), fluidised reactor or pressurised filter housing.
- Allow contact time. Position downstream of biological filtration — slower flow generally gives better adsorption.
- Replace the media. Replace every 4–8 weeks depending on bioload and water quality. Spent carbon cannot be regenerated.
Organic and chemical control
What CARBOX adsorbs
Actual performance depends on concentration, contact time, flow, competing compounds and replacement schedule.
Dissolved organics
Tannins, humic acids, yellow water and other dissolved organic compounds.
Taste and odour
Geosmin, 2-MIB and other taste or odour compounds listed for carbon adsorption.
Chlorine and chloramine
Useful for treating source water and makeup water where these residuals are present.
Medication residues
Suitable for post-treatment cleanup when the treatment label permits activated carbon use.
VOCs and phenols
Volatile organic compounds and phenolic compounds are included in the listed target group.
Pesticides and sulphur compounds
Pesticides, herbicides, hydrogen sulphide and mercaptans are listed application targets.
Sizing and specifications
Full specifications
| Parameter | Value | Method or note |
|---|---|---|
| Aquarium dose (general) | 100–200 mL per 100 L | Adjust for bioload and water quality |
| Post-medication cleanup | 48–72 hours | Then remove; follow treatment instructions |
| Replacement interval | Every 4–8 weeks | Depends on bioload and water quality |
| Total surface area | 1100–1150 m²/g | N₂ BET |
| Iodine number | ≥1050 mg/g | ASTM D4607 |
| CTC activity | 55% | ASTM D3467 |
| Hardness | ≥98% | ASTM D3802 |
| Apparent density | ≥0.45 g/mL | ASTM D2854 |
| Ash content | ≤8% | ASTM D2866 |
| Moisture | ≤5% | ASTM D2867 |
| Total pore volume | 0.45–0.5 cm³/g | Typical value |
| Micropore volume | >95% | Sub-2 nm |
| Mesh size | 8×30 (0.6–2.3 mm) | Minimum 90% listed |
Connections and options
Choose the right setup
Related filtration
Different problem? Different media.
FERRIX-03 GFO
Granular ferric hydroxide for phosphate, silicate and a range of heavy metals in aquarium and aquaculture systems.
View FERRIX-03Need help choosing?
Send BTA your system volume, application and current water-quality readings for a more sensible media recommendation.
Contact BTAWhat's included
A clear filtration plan
CARBOX 830 media
Coconut shell granular activated carbon supplied in the selected native Shopify variant.
Dosing guidance
General aquarium starting rate of 100–200 mL per 100 L, with replacement every 4–8 weeks.
Technical values
Key surface-area, pore-volume, hardness, mesh and activity values are listed above.
Upgrade and advanced use
Scale the media strategy
System-specific sizing
For aquaculture, RAS and water-treatment systems, contact BTA with volume, flow, loading and current water-quality information.
Pair the right media
Use CARBOX 830 for dissolved organic control and select a separate media when phosphate, silicate or metals are the primary concern.
Frequently asked questions
CARBOX 830 FAQs
What dose of CARBOX 830 should I use?
The general aquarium starting rate is 100–200 mL per 100 L of system water. Adjust within that range for bioload and water quality, and contact BTA for aquaculture or RAS systems.
What mesh size is CARBOX 830?
8×30 mesh, listed as 0.6–2.3 mm granule size. The supplied guidance identifies this range for media bags, reactors and filter housings.
What does CARBOX 830 remove?
The supplied product information lists dissolved organic compounds, taste and odour compounds, chlorine and chloramine, medication and antibiotic residues, VOCs and phenols, pesticides and herbicides, endocrine disruptors, hydrogen sulphide and mercaptans.
Can I use it in a mesh bag or reactor?
Yes. Use a 500 μm mesh or finer bag, a suitable fluidised reactor or a compatible pressurised filter housing. Rinse before loading.
How often should it be replaced?
The supplied label guidance is every 4–8 weeks depending on bioload and water quality. Higher-demand systems may require more frequent replacement.
Do I need to rinse it first?
Yes. Rinse thoroughly with fresh water until it runs clear before first use. Avoid inhaling dust.
Not sure which media or dose fits?
Send BTA your system volume, application and current water-quality readings. We can help you choose a sensible starting point.
Talk to BTATrade & wholesale
For commercial aquaculture, hatchery, maintenance and water-treatment requirements, contact BTA about bulk media supply and trade pricing.
Request trade pricingAsk a technical question
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