Pawfly Aquarium Nano Bio Sponge Filter Quiet Fry Betta Shrimp Foam Filter Kit with Airline Tubing for Small Fish Tank up to 3 Gallon

Bio Sponge Filter is a must-have to grow lots of beneficial substances, aerate the water and provide some filtration at the same time. The air-driven sponge filter relies on abundant bubbles to push water into the sponge. It mechanically filters water by trapping some wastes. The substances on the sponge break down harmful wastes to ensure the stability of tank water. The filter features fine filtration effect, quietness and easy maintenance. Especially fit for breeding of Discus, fry or small fish. Be sure to rinse the foam filter with aquarium water after use to maintain effective biological filtration. Tiny size - 2 inches in diameter and 4.8 inches in height. Work great with 10-gallon small tanks and bowls. Each part of the filter can be easily detached without effort. You can easily tear down it for cleaning or replacement.