This premium, low-ash and highly porous carbon is highly effective at removing heavy metals, odors, discolorations, organic contaminants and pollutants from aquarium water. Chemical filter media Ideal for use with all Fluval canister filters Provides large surface area for adsorption of impurities Does not raise phosphate levels Leaves water sparkling and crystal clear Fluval Carbon is made from bituminous coal, which is the best overall source material for carbon used for aquarium water filtration due to its varying pore structure and sizing. Carbon, especially when new, can remove some trace elements present in many liquid plant supplements. We recommend waiting at least a week or two after having changed the carbon in your filter before dosing with a liquid plant supplement.
