Hagen Fluval Carbon, Three 100 Gram Packs (Fluval A-1440)
Fluval Carbon improves water clarity and color, while also removing odors. Highly porous, it provides large amounts of surface area for adsorption of impurities. It effectively removes heavy metals, odors, discolorations, organic contaminants, and pollutants to leave your aquarium water crystal clear and sparkling. This product doesn't not release phosphates.