CARBOX 830 | Coconut Shell Granular Activated Carbon | Biotech Aquatica

Aquarium & Aquaculture Grade CARBOX 830 Coconut shell granular activated carbon. 1100+ m²/g surface area, >95% micropore volume. The 8×30 mesh (0.6–2.3 mm) delivers maximum treatment per pass — sized for fluidisation, retained by 500 micron bags. 1150m²/g Surface Area >95%Micropore Volume 98%Hardness 8×30Mesh · 0.6–2.3 mm NEW1100–1150 m²/g Total Surface Area MICROPORE>95% Micropore Volume · <2nm Pore Size ULTRA HARD55% CTC Activity · 98% Hardness · Very Low Dust ✓ 8×30 Mesh (0.6–2.3 mm) ✓ >95% Micropore Volume ✓ ≥98% Hardness ✓ ≤5% Moisture ✓ ≤8% Ash Content CARBOX830 is a high-performance coconut shell granular activated carbon manufactured via high-temperature steam activation. With >95% micropore volume and pores under 2nm, it excels at adsorbing the small organic molecules that cause discolouration, odour, and dissolved organics in recirculating aquaculture and aquarium systems. The 8×30 mesh (0.6–2.3 mm) delivers high surface area and treatment per pass, excellent fluidisation in reactors, and easy retention in any 500 micron or smaller mesh bag. Why This Carbon The Difference Not all carbon is created equal. Here's why coconut shell GAC outperforms generic carbon in aquaculture and water treatment. 🔬 >95% Micropore Volume Virtually all pore space is sub-2nm micropores. These tiny pores adsorb the small organic molecules (DOC, geosmin, MIB, medication residues, phenols) that cheap, broad-pore carbon misses entirely. ⚡ 1100+ m²/g Surface Area 1100–1150 m²/g total surface area with 55% CTC activity and ≥1050 mg/g iodine number. Every gram has more adsorption sites than most competitors — more contaminant removal per pass. 🛡️ 98% Hardness · Low Dust Industry-leading hardness means less fracturing, fewer fines, and longer bed life. Very low dust means crystal clear water from the first rinse — critical in display aquaria and broodstock systems. 🌊 Perfect 8×30 Mesh Size 0.6–2.3 mm granules — small enough for maximum surface area and treatment per pass, large enough for excellent fluidisation. Retained by any 500 micron or smaller mesh bag. No bypass, no blow-through. Technical Specifications What's Inside Every specification engineered for performance. Coconut shell base, steam activated, graded to 8×30 mesh for the filtration professional. Total Surface Area 1100–1150 m²/g measured by N₂ BET method. Massive internal surface for maximum contaminant adsorption in a single pass. Micropore Volume >95% of total pore volume in the sub-2nm micropore range. This is what separates high-grade coconut shell carbon from generic coal-based alternatives. Iodine Number ≥1050 mg/g per ASTM D4607. High iodine adsorption confirms excellent microporosity for small-molecule removal. CTC Activity 55% per ASTM D3467. Carbon tetrachloride activity measures overall adsorption capacity — 55% is a high-performance grade. Hardness ≥98% per ASTM D3802. Exceptional resistance to attrition — longer bed life, fewer fines, less maintenance. Apparent Density ≥0.45 g/ml per ASTM D2854. High density for its class — won't float during backwash, stays where you put it. Ash & Moisture ≤8% ash (ASTM D2866) and ≤5% moisture (ASTM D2867). Low impurities mean more active carbon per kilogram. Pore Structure 0.45–0.5 cm³/g total pore volume with >95% in the micropore range (<2nm). Engineered for small-molecule organic adsorption. What It Removes Contaminants Removed CARBOX830's >95% micropore volume targets the small organic molecules that broad-pore carbons miss. Here's what it adsorbs from your water. Dissolved Organic Compounds (DOC) Yellow water, tannins, humic acids. The micropore structure targets the low molecular weight organics that cause discolouration and feed nuisance algae in recirculating systems. Taste & Odour Compounds Geosmin and 2-MIB. The musty, earthy smell in aquaculture water — the exact molecules coconut shell micropores are optimised to adsorb at low concentrations. Chlorine & Chloramine Municipal water treatment residuals. CARBOX830 neutralises free chlorine and breaks chloramine bonds — essential for water changes and hatchery makeup water. Medication & Antibiotic Residues Post-treatment cleanup. After formalin, malachite green, antibiotic, or copper treatments, CARBOX830 adsorbs residual actives to protect biofilters and sensitive species. VOCs & Phenols Volatile organic compounds and phenolic compounds. Byproducts of organic decomposition, plastic off-gassing, and source water contamination. Adsorbed at low concentrations by the micropore structure. Pesticides & Herbicides Agricultural runoff compounds. Source water in regional and rural areas carries trace pesticides and herbicides — CARBOX830 captures these before they reach stock. Endocrine Disruptors Pharmaceuticals and synthetic hormones. Trace compounds that affect reproduction in fish and crustaceans. The sub-2nm pore structure targets these small molecules effectively. Hydrogen Sulphide & Mercaptans Rotten egg smell. Produced by anaerobic zones in systems with detritus buildup. CARBOX830 adsorbs these sulphur compounds, protecting stock health and worker safety. How To Use Quick Start From bag to filter in four steps. Works in media bags, fluidised reactors, and pressurised filter housings. 01💧 Rinse Thoroughly Flush with fresh water until it runs clear. This carbon has very low dust, but a quick rinse ensures crystal clear water from the start. Use a 500μm or finer bag if running loose. 02📦 Load Your Filter Place in a media bag, fluidised reactor, or pressurised filter housing. The 0.6–2.3 mm granules fluidise evenly and won't compact or channel under normal flow rates. 03⏱️ Maximise Contact Time Slower flow = better adsorption. Aim for adequate contact time through the carbon bed. In RAS and recirculating systems, position downstream of biological filtration for best results. 04🔄 Replace Regularly Replace every 4–8 weeks depending on bioload and water quality. Spent carbon cannot be regenerated in the field — fresh carbon maintains peak adsorption capacity. Full Specifications Tech Specs Parameter Value Test Method Total Surface Area 1100–1150 m²/g N₂ BET Method CTC Activity 55% ASTM D3467 Iodine Number, min 1050 mg/g ASTM D4607 Hardness, min 98% ASTM D3802 Apparent Density, min 0.45 g/ml ASTM D2854 Ash Content, max 8% ASTM D2866 Moisture, max 5% ASTM D2867 Total Pore Volume 0.45–0.5 cm³/g — Micropore Volume >95% — Micropore Size <2 nm — Mesh Size 8×30 (0.6–2.3 mm) min 90% All specifications are typical values. Tested per ASTM methods where indicated. Questions FAQ Q. What mesh size is CARBOX830? 8×30 mesh, which is 0.6–2.3 mm granule size. This is the ideal range for water treatment — large enough for good fluidisation and flow, small enough for maximum surface area and treatment per pass. Q. What does CARBOX830 remove from water? CARBOX830 adsorbs dissolved organic compounds (DOC), taste and odour compounds (geosmin, MIB), chlorine and chloramine, medication and antibiotic residues, VOCs and phenols, pesticides and herbicides, endocrine disruptors, and hydrogen sulphide/mercaptans. Q. Can I use this in a mesh bag or reactor? Yes. The 8×30 mesh granules are retained by any bag with 500 micron or smaller mesh. They also work perfectly in fluidised reactors and pressurised filter housings. Q. How often should I replace activated carbon? In aquaculture and aquarium systems, replace every 4–8 weeks depending on bioload and water quality. In high-demand applications, more frequent replacement maintains peak adsorption capacity. Q. Is coconut shell carbon better than coal-based carbon for water? Coconut shell GAC has a more developed micropore structure than coal-based carbon, making it superior for adsorbing lower molecular weight organics commonly found in aquarium and aquaculture systems. It also produces less dust and has higher hardness. Q. Do I need to rinse the carbon before use? Yes — always rinse thoroughly with fresh water before first use to remove fine dust. This carbon has very low dust content, but a quick rinse ensures crystal clear water from the start. Q. What does 55% CTC activity mean? CTC (carbon tetrachloride) activity measures the adsorption capacity of activated carbon. 55% is a high-performance grade, indicating excellent ability to adsorb organic compounds, chlorine, and dissolved contaminants. Q. What is micropore volume and why does >95% matter? Micropore volume measures the percentage of total pore space in the sub-2nm range. >95% means virtually all pore space is micropore — exactly what you want for adsorbing small organic molecules like DOC, geosmin, MIB, medication residues and phenols. This is what separates CARBOX830 from cheaper, lower-grade carbons. Trade & Wholesale Need bulk quantities for commercial aquaculture, hatcheries, or water treatment operations? We supply carbon by the bag, pallet, or container load — with pricing to match. Get Trade Pricing Request A Sample