Fluval FX Carbon Pads

Carbon Foam for FX2/FX4/FX5/FX6 Canister Filter, 2-Pack
 
Designed specifically for FX2, FX4, FX5 and FX6 high performance canister filters, the Carbon Impregnated Foam Pad pulls double duty as both an effective mechanical and chemical media.
Compatibility
FX2/FX4/FX5/FX6 Canister Filter
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