TINOR 2 PCS Aquarium Filter Enhancer Kit Double Fish Tank Filter with 4 Replacement Sponges for Biological and Mechanical Filtering

Safe Material: This aquarium sponge filter is made of premium plastic and sponge, non-toxic and environmentally friendly and environmentally friendly sponge that will not harm fish. Improving Water Quality: The pores of the sponge filter have a large surface area on which aerobic bacteria can grow. By cultivating nitrifying bacteria, you achieve excellent biological filtration in your tank. Also, your aquarium water stays super clean and crystal clear. Easy Installation: The water drain hose on the sponge filter is adjustable, so you can change the direction and the height of 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. Use tank water instead of tap water to clean it when changing water. Just rinse and squeeze several times until the water flows clear.