With this filter, this corner filter combines physical and biochemical filtration for your fish and increases the oxygen solubility. with the filter of the round fish tank, of water, lazy people raise fish. When the plug is removed, the front waterfall water outlet can be changed into silent water outlet. A for you. Feature - ColorTransparent - Material: Plastic - S Size: Approx. 18.60X10.00X9.30cm; 7.31X3.93X3.65in - Size: Approx. 22.60X11.30X10.00cm; 8.88X4.44X3.93in - L Size: Approx. 26.60X13.30X10.00cm; 10.45X5.23X3.93in - XL Size: Approx. 30.60X15.30X10.00cm; 12.03X6.01X3.93in - Supply the water with much-needed oxygen, For tank size up to 10-40 - Reduce noise from air pump and consume the lowest wattage. - Multi-layer media, easy to move and clean. Integrated design to avoid water leakage. - layer filter pad provides a mechanical filtration. - Black and ceramic rings with gravel provide biochemical filtration. Package list: 1 x Filter