Review on 🐠 AQUANEAT Aquarium Bio Sponge Filter: Enhancing Breeding and Fry Development in Betta, Shrimp & Nano Fish Tanks - 3PCS Set (10 Gal) by Jessica Erwin

You will receive three good quality foam filters. They are weighted but can still float. This can be fixed with a suction cup. Get an air pump kit with suction cups, fittings and check valves and you're good to go. Attach the suction cup to the air hose and the side of the tank to hold the filter to the bottom of the tank. I hooked it up to my 20 gallon Tetra Whisper Air Pump and use it in my 10 gallon aquarium. I have it for emergencies when I need it in my quarantine/hospital tank. I love it so much I'm considering getting rid of my HOB filter and using two sponge filters instead.