Increase the Oxygen Content of Water: The aquarium air filter filters out excess impurities in the water for aquarium organisms, helps stabilize water quality and increases oxygen solubility.Easy to clean Usethere is a suction cup at the bottom of the aquarium filter, which can be adsorbed anywhere in the aquarium. There is no need to specially reinforce the base, and there is no need to worry about accidentally hurting the fish.Ultra-Quiet: When the aquarium air pump is used, it works quietly and makes no noise, but the filtering effect is excellent, you can clean it. use with confidence.Three Layers Design: The bottom of the mini filter pump is a layer of biochemical sponge, which can filter impurities in the water, and the middle layer is layers of bubble stone, which can increase the oxygen content in water and increase the survival rate of fish. The top layer is the outlet of water.Wide range of applications: the oxygen filter is suitable for small aquariums such as spherical aquariums, small aquariums, special-shaped aquariums and other small home aquariums.Quantity delivered: 2 (filter + water pipe)Size: filter: 9 x 3.5 cm tube length 1 m.