FEDOUR 17cm Round Aquarium Bio Sponge Filter: Large Air-Powered Fish Tank Filter, Quiet Filter for 30-150L Tank, Betta Shrimp Fry Breeding

🐟 FEDOUR Round 17CM Sponge Filter] This Aquarium sponge filter should be used together with an air pump and cannot be used alone. It adopts round sponge to increase the surface of filtration that is good to filtering efficiency. The dense sponge can effectively absorb impurities, bacteria, feces and debris in the aquarium, keeping the fish tank crystal clear. 🐟 [Easy to use] Come with a complete sponge filter and 1M air tube, you just need to connect the air tube with air pump. Put the sponge in the tank and press it several times to fully absorb tank water to make it sink to the bottom. With a weighted base, the filter will not float on the water surface. Can be well hidden behind the decorations. 🐟 [Air-Powered Sponge Filter] When the air pump provides air to the fish tank, the air passes through the filter, causing a difference in air pressure, and the water flows from the side with high pressure to the side with low pressure to achieve the filtering and oxygenation effect. Air pump is not included. 🐟 [Ultra-Quiet & Energy-saving] Powered by air, this aquarium filter works silently and have no impact with your lovely fish and human life, safer for young fish. Air pump and this sponge filter share the same power source, more power saving. 🐟 [Application] With simple but unique design, this internal submersible filter can be used in both salt water and freshwater. Suitable for 30-150L fish tank. Excellent for small size fish like betta, dwarf cichlid, guppy, killifish etc., shrimp, breeding.