Review on 🐠 Pawfly Nano Bio Sponge Filter: Quiet Betta, Fry, Shrimp & Small Fish Foam Filter - Ideal for Tiny 10 Gallon Aquariums by Lisa Reed

I use this sponge filter in a planted aquarium (no fish yet) and it keeps the water crystal clear without much fuss. The sponge is soft and thin, absorbed water immediately (I squeezed the air out underwater) and didn't surface at all. Below it is weighted. It's all black, looks good, and is also small enough to hide behind a big rock. Great for a 10 gallon tank with no fish - I don't know how it will look with fish. Cheap enough to try!