Review on Pawfly Nano Bio Sponge Filter - Quiet Betta, Fry, Shrimp, and Small Fish Foam Filter for Tiny Fish Tanks up to 10 Gallon (3 Pack) by Wendy Roney

I am happy with this filter, I never use this filter. I have a baby African dwarf frog. I keep him in a small gallon tank until his tank comes. I had one of the little filters that goes under water. It didn't work well. He needs a stronger air motor, but a stronger motor isn't good for a frog. So I found this, it cleaned his aquarium in a couple of hours, so clean I was so surprised. I can't wait for my baby frog aquarium to arrive. I have a big one too. I know his tank will be fine. My frog will be happy about its large tank and its great filters.