Finest-Filters Fish Pond 8" Pre Filter Foam Sponge Cube

You are purchasing a high quality 8" pond foam pre filter cube. These foams make an ideal pre filter for fountain pumps, or can be pushed over a pumps existing casing to provide a much larger surface area for biological and mechanical filtration. This 8" cube comes with an adjustable stepped centre ring that can be removed to suit individual requirements. If required, these foams can also be cut to size. The 8" Foam Cube measures 8" x 8" x 8", and has a centre cutout at 65mm and 90mm diamter.