Fluval Bio Foam Aquarium External Filter Sponge Pad 106 206 306 406 FX4 FX5 FX6
Genuine Fluval Bio Foam - For External Fluval Filters. BEWARE: Non genuine foams supplied as Fluval compatible as these may are usually not Fluval and therefore may not fit your filter properly. Ours are manufactured by Fluval for Fluval.