These are genuine Bio-Foam Filter Pads for the Fluval FX4, FX5 and FX6 External Filters. 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. The Pads are custom fit to prevent bypass, they have a pore size that allows efficient water flow with less clogging for long-lasting filtration. Genuine Fluval Spare Part Captures large particles and debris for effective mechanical filtration Provides crucial first stage in the filtration process Custom fit to prevent debris bypass Pore size allows efficient water flow with less clogging for long-lasting filtration For freshwater and marine environments Suitable for use with the FX4, FX5 and FX6 3 Bio-Foam pads per pack
