HKM-106515 Sponge Filter Cotton Tray with Cleaning Kit for Efficient Filtration ReplacementIntroducing the HKM 106515 Sponge Filter Cotton Tray with Cleaning Kit, an essential tool for maintaining your aquarium's ecosystem. This thoughtfully designed product caters to your filtration needs with a combination of functionality and convenience. The HKM 106515 features a versatile five piece filter element, complemented by a one piece filter element and a sponge. This setup allows for effective filtration, ensuring that your aquatic environment