Fluval Carbon Impregnated Foam Pads are specially designed for Fluval FX5/6 High Performance Canister Filters. These carbon impregnated pads capture micro particles as the water passes through. The added carbon removes odor, discoloration, as well as heavy metals and organic contaminants.
Key Features :

Protects aquarium filter motor by trapping debris
Added carbon removes odors and keeps water crystal clear
For freshwater and marine environments,