"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 surface of the water and improve aeration Dual filtration system: 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 Easy to use: Sets up and takes down quickly and comes with five suction cups for secure 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 Filtration is an essential technical element for maintaining the balance of an aquarium. It is therefore essential to choose the power of the filter according to the fish population and the volume of water in your aquarium. internal filter eliminates toxic residues (food, excrement...) contained in the water of your aquarium to transform them into non-toxic residues thanks to the bacteria which colonize it."