3 in 1 filter: filter equipped with an aquarium pump and double filter media, it can filter water, add oxygen and form a fountain at the same time, helping to agitate the water surface and improve ventilation Double filtration system: The activated carbon and foam that make up the best water filtration system for small aquariums (sold separately) ensures good oxygenation for clear water and a healthy environment 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 Quantity supplied: 1 piece Product color: black Product specification: 46*42*134mm 1. This submersible pump can be used for multiple purposes such as pumping water, spraying oxygen, filtering, etc. 2. Suitable for freshwater and saltwater use, safe and durable, quiet, easy to maintain and many other benefits. Note: 1. Avoid using extension cords. 2. Only suitable for working in water. 3. It is necessary to regularly clean the buildup and dirt inside the shaft. 4. After cleaning, please confirm whether the seal between the water blade and the shaft has been tightened