( Best selling product )
Designed specifically for the Fluval FX4, FX5 and FX6 high performance canister filters, the Carbon Impregnated Foam Pad pulls double duty as both an effective mechanical and chemical media. Features Mechanical/Chemical filter media Pad traps small particles and debris Carbon helps remove odors, discolorations, heavy metals and organic contaminants For use in freshwater and saltwater aquariums Convenient 2-pack format 2x carbon impregnated foam pads included