DescriptionThis item is a filter that can be adsorbed on the wall of the fish tank. It uses en vironmentally-friendly material as filter material and can be connected with an air pump or a water pump to achieve the purpose of oxgenation and filtration an reduce the death of fish.Feature- Color: As shown. - Material: Plastic. - Size: 14 x 4 x 4 cm. - To save space in the cylingder and the outlet angle is adjustable. - With simple filter, this corner filter combines physical and biochemical filtration for your fish and increases the oxygen solubility. - The layer of filter pad serves a mechanical filtration, work as a biochemical filtration and support colonization of beneficial bacteria. - Quiet filtering system. Especially good for breeding small fish. Efficiently remove toxic waste and maintain clean water for your fish. - Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!