Compact Aquarium Bio Sponge Filter: Mini Air-Powered Filter for up to 15-Gallon Fish, Betta, Shrimp, Fry Tanks

The [HITOP 2 Pack 4in Mini Sponge Filter for 1-15Gal] aquarium sponge filter is designed to be used in conjunction with an air pump and cannot function independently. Its round sponge construction maximizes the filtration surface area, thereby enhancing the filtering efficiency. The dense sponge effectively traps impurities, bacteria, feces, and debris, keeping the fish tank crystal clear.

Featuring a compact and convenient design, the filter comes with two round sponge filters and a 3.2ft air tube. Its miniature size allows for discreet placement behind decorations. To set it up, simply place the sponge in the tank and press it several times to fully saturate it with tank water, causing it to sink to the bottom. The weighted base ensures the filter does not float on the water surface.

The filtration and oxygenation process is powered by the air pump, which creates a difference in air pressure within the filter. As the air passes through the filter, the water flows from the high-pressure side to the low-pressure side, enabling both filtration and oxygenation. However, the air pump is not included in the package.

Designed for minimal noise and energy-efficient operation, this aquarium filter runs silently, ensuring a peaceful environment for both your fish and your own living space. The filter and the air pump share the same power source, making it a more power-saving solution.

With its simple yet unique design, this internal submersible filter can be used in both saltwater and freshwater aquariums. It is suitable for tanks up to 15 gallons, making it an excellent choice for small-sized fish like bettas, dwarf cichlids, guppies, killifish, and shrimp, as well as for breeding purposes.

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