In-store pickup only. Quantum Bio-Active Carbon is a premium, high-grade activated carbon that polishes reef and marine aquarium water to crystal clarity. It pulls dissolved organic compounds, yellowing and discoloration, odors, toxins, and leftover medications out of the water, leaving your tank cleaner, clearer, and healthier. Low in dust and phosphate, it is built for sensitive reef systems but is safe to use in any freshwater or saltwater aquarium. Browse more filter media and cartridges to dial in your filtration. Why Bio-Active Carbon Crystal-clear water: Removes the dissolved organics and tannins that cause yellow, hazy water. Cleaner, safer reef: Strips out toxins, odors, and leftover medications so corals and fish thrive. Reef-grade purity: Low dust and low phosphate leaching, so it will not feed nuisance algae. Fresh or salt: Branded for reef and marine systems, but safe and effective in any aquarium. How to Use Rinse the carbon in tank or RODI water until the water runs clear. Place it in a media reactor, canister filter, or a fine mesh media bag set in a high-flow area. Replace every 3 to 4 weeks, or sooner once the water starts to discolor again. Great to run after dosing medications to pull the residue back out of the water. Choose Your Size 500 g Nano and small tanks, or a single change on a medium system 1 kg Medium reef systems with regular media changes 2.5 kg Large systems, or bulk value for frequent rechanges Specifications Brand Quantum Product Bio-Active Carbon Type Activated carbon filter media Sizes 500 g, 1 kg, 2.5 kg Best for Reef and marine aquariums (safe for freshwater too) How to run Media reactor, canister, or media bag Replace Every 3 to 4 weeks Made in Australia Pickup In-store pickup only Recommended Pairings Weco Coarse Mesh Media Bag to hold the carbon in your sump or filter IceCap DC Media Reactor to run carbon at the ideal flow rate Quantum Bio-Enhance and Quantum Coral Cane to round out the Quantum reef lineup Browse more filter media and reef supplements FAQ What does activated carbon actually do?It adsorbs dissolved organics, discoloration, odors, toxins, and leftover medications, giving you cleaner, crystal-clear water and a healthier tank. How do I run it?Rinse it first, then place it in a media reactor, canister, or fine mesh media bag in a high-flow spot. Replace it every 3 to 4 weeks. Which size should I get?See the size guide above. Smaller tanks and single changes do well with the 500 g, while larger systems or frequent rechanges are better served by the 1 kg or 2.5 kg. Can I use it in a freshwater tank?Yes. It is made for reef and marine systems, but activated carbon works just as well in freshwater aquariums.
