Protect water qualityThe oxygen filter can biologically filter, stabilize water quality, add oxygen solubility, increase oxygen content in water. 39;aquarium and increase the survival rate. Three-layer filtration The bottom of the mini aquarium air filter is a layer of biochemical sponge to prevent small fish from #39;be sucked into the filter. The backing is bubble stone and the top is the funnel outlet. It can increase the oxygen levels in the aquarium and increase the survival rate. Suction Cup Design The air sponge filter comes with a suction cup that is attached to prevent fish from moving in the water. It can be installed anywhere on the aquarium glass. High-quality materials The aquarium sponge filter is made of high-quality durable plastic, non-toxic and durable. It is harmless to all fish and harmless to the environment. Widely used The organic sponge filter is suitable for small aquariums such as spherical aquariums, small aquariums, special-shaped aquariums and other small family aquariums. Properties: - Note: The small aquarium filter should be used with the oxygen pump.Do not use an oversized air pump to avoid uneven mixing of water and air . - Easy to clean: simply rinse the sponge and squeeze it under cold running water- Operation Quiet: The super biochemical sponge filter is characterized by its quiet operation, excellent filter effect and high oxygen content of water.- Easy installation: easy installation on the filter connector to prevent small fish from being sucked into the filter Specification: - Combination: 1 box/set, the box contains 1 filtration pump + 1 trachea / set- Filter material: plastic- Size: 9.8 * 3 cm - Weight: 15.4 g li>- The trachea is approximately 90 cm long and 0.6 cm in diameter Scope of delivery - 1 * Aquarium Organic Sponge Filter - 1 * Aquarium Hose Note: 1.For manual measurement , please allow 1~3mm error, thank you. 2.Due to differences between different monitors, the picture may not match the actual color of the project. We guarantee that the style will be the same as the picture style.