3 in 1 filter: filter equipped with an aquarium pump and filter media, it can filter water, add oxygen and form a fountain at the same time, helping to agitate the water surface and improve aeration ensures good oxygenation for clear water and a healthy environment for safe installation in the aquarium Humanized design: The water inlet adopts relatively narrow fences to effectively prevent fish and shrimp from entering the filter Wide range of use: Perfect for irregularly shaped or shallow habitats - can be mounted horizontally or vertically and can be fully submerged