Description BIO Sponge Filter provides biological filtration to the aquarium, contributes to stable water quality and increases oxygen solubility, resulting in a clean environment. cleaner life for your fish. Features: The 10-layer 10-layer design sponge filter also provides mechanical and biological filtration, the infusion chamber d air produces tiny bubbles that increase oxygen solubility. Easy to set up, just install an airline in the device and turn on the air pump. Easy to erase , simply rinse and squeeze the sponge into the tank water. Work quietly. Adhere smooth surface with suction cup. Filter Accessories perfect for your aquariums and tank. Recommended tank size up to 55 gallons, suitable for small fish as the filter produces minimal current and has almost no There is no way to suck the fish through the filter. Features: Material: plastic + sponge The black color Size item size: 9.5 * 6.5 * 2.4in Package weight: 170g / 6nces Package size: 240 * 160 * 60mm / 9.45 * 6.3 *