GMsound Bio Sponge Filter for 20 or 40 Gallon Breeding Fry Betta Shrimp Fish Tank Aquariums Review

The sponge filters are made of excellent and perfect material; it can be reused for long time. The sponges of filters are designed by multilayer principle,has large surface, which will not cause blockage and could be washed easily. When using in filtered system, the sponge filter will not cause any noise pollution. When an airstone is used to provide air to the aquarium, it increases the oxygen content of the tank. The sponge filter is suitable for all Freshwater fishes, like Discus, Tetras, Guppy, Arowana,Betta.