Fluval 18 Pack Of Replacement Poly/Foam Pads For C4 Power Filters

18 count total. The Fluval C4 Poly Foam Pad Replacement Media 3-pack has two sides that combine to provide thorough and effective mechanical filtration. The Fluval C4 Poly Foam captures large particles of debris on it porous foam side while the polyester side filters out finer debris and contaminants. The Poly Foam Pad Replacement Media helps bring your fish a healthy and clean environment. The Fluval C4 Poly Foam Pad was made specifically for the Fluval C4 Power Filter.