6 x Compatible Bio Foam Foams Suitable For Fluval FX2, FX4, FX5 and FX6 Filter

You are purchasing 6 x Finest Filters Compatible Bio-Foam filter pads suitable for Fluval FX2, FX4, FX5 and FX6 External filters. These Bio-Foam filter pads are ideal for enhancing biological filtration, and will also mechanically filter the water of particles which are not removed by the main foam screen filter. Please Note: These are NOT original spare parts - these are compatible filters manufactured by Finest Filters.