Fluval Bio-Foam Pads are specially designed for Fluval FX4, FX5 and FX6 High Performance Canister Filters. The pads capture large particles and debris for effective mechanical filtration, the crucial first stage in the filtration process. Custom fit to prevent bypass, they have a pore size that allows efficient water flow with less clogging for long-lasting filtration. Key Features : • Mechanical filter media • Custom fit to prevent debris bypass • Ideal pore size allows efficient water flow and longer media lifespan • Enhances the biological filtration process • For use in freshwater or saltwater aquariums • Convenient 3-pack format
