Pisces Pond Filter 3 Grade Media Foam Set 18" x 25" (460 x 640mm) Coarse, Medium and Fine - Universal Replacement Fish Pond Filter Media

Compatible Replacement - Pisces 3 Piece Filter Foam set is a suitable replacement foam for use in most pond filters. Multiple Uses - The filter foams have been designed to work universally with most filter systems -simply cut out the holes needed or trim each layer to fit. Enhance Filtration - The foam media helps to keep the pond clean and healthy as they provide essential breeding grounds for beneficial bacteria. Egg Box Shape -Each foam sheet has an "egg box" design shape that increases the surface area for bacteria to grow. 3-Grade Foams - The set consists of 3-grade foams - Fine, Medium, and Coarse and measure 18" x 25" (46 x 64cm).