Fluval FX Carbon Foam, Replacement Aquarium Filter Media, 2-Pack, A249,White

Performs double duty as both mechanical and chemical filter media, Pad traps small particles and debris for mechanical filtration, Carbon helps remove odors, discolorations, heavy metals and organic contaminants for chemical filtration, Helps create clean and healthy water conditions, Includes two Carbon Foam inserts designed for use in Fluval FX4, FX5 and FX6 Canister Filters in freshwater and saltwater aquariums