OASE Indoor Aquatics Filter Foam for The Bioplus 30 Ppi

The Filter Foam Bioplus 20 Ppi For The Bioplus 50, 100, Or 200 Includes A Fine Replacement Filter Foam Customize Your Choice Of Filter Foams And Fleeces To Meet The Needs Of Your Aquarium Timing To Replace The Filter Foam Varies Upon Aquarium Size And The Number Of Fish And Plants Package Dimensions: 3.15" L X 2.36" W X 2.44" H