2 Piece Sponge Filter Aquarium Set, Air Lifter Aquarium Filter for Biological and Mechanical Filtering, with 4 Replacement Sponges

Safe material: this sponge aquarium filter is made of high-quality plastic and sponge, is non-toxic and environmentally friendly and an environmentally friendly sponge that does not harm fish.
Improve water quality: the pores of the sponge filter have a large surface on which aerobic bacteria can multiply. By cultivating the nitrifying bacteria, you get excellent biological filtration in your tank. In addition, the water of your aquarium remains super clean and crystal clear.
Easy installation: the water outlet pipe on the sponge filter is adjustable, so you can change the direction and height of the water flow. Compatible with 2 suction cups, can be installed anywhere, can be easily hidden on the back wall of the aquarium and can also be used as a pre-filter or secondary filter.
Removable sponges: you can easily remove the sponge from the filter to clean or replace it. Instead of tap water, use water from the tank to clean it when changing water. Simply rinse and squeeze a few times until the water runs clear from the sponge.
Widely used: this mini aquarium filter is small and easy to hide behind the plant. Perfect for shrimp tank, betta tank, breeder tank, turtle tank, goldfish, discus, crayfish, baby-fish or other fish. Eliminates floating matter and pollutants in aquarium water, increases oxygen content and ensures clear water and a clean aquarium environment.