Quantity:1 batteries required:No Item Weight:102 g Specification: Condition: 100% Brand New Item Type: Fish Tank Filter Material: Plastic Color: As Pictures Shown Scope of Application: Suitable for small fish tank, shrimp tank, round fish tank and fish tank with inconvenient pump installation Product Size: Diameter of Suction Cup: Approx.2.4cm / 0.9in Total Length of Filter: Approx.9cm / 3.5in Package List: 2 x Aeration Tube 2 x Filter 2 x Biochemical Cotton Note: This product does not include an oxygen pump, you need to buy it yourself. Bacteria CultureThis aquarium filter has the function of cultivating microorganisms beneficial to fish, which is more reliable and practical. High QualityPrecision manufacturing can ensure stable performance and long service life. Fish HealthOur pneumatic filter can increase the oxygen content in the fish tank and improve the survival rate of the fish. Improve Water QualityThis fish tank aquarium can clean the water in the aquarium and improve the living environment of fish. It is recommended to clean the filter cotton with fish tank water. Scope of ApplicationSuitable for small fish tanks, shrimp tanks, round fish tanks and fish tanks inconvenient to install pumps. See more product details Bacteria CultureThis aquarium filter has the function of cultivating microorganisms beneficial to fish, which is more reliable and practical. High QualityPrecision manufacturing can ensure stable performance and long service life. Fish HealthOur pneumatic filter can increase the oxygen content in the fish tank and improve the survival rate of the fish. Improve Water QualityThis fish tank aquarium can clean the water in the aquarium and improve the living environment of fish. It is recommended to clean the filter cotton with fish tank water. Scope of ApplicationSuitable for small fish tanks, shrimp tanks, round fish tanks and fish tanks inconvenient to install pumps.