Aquasstar air pumps we deal in have been useful for delivering power to air stones. These can supply circulation and supplemental aeration. Also, these can promote gas exchange at the water surface. The pumps are highly beneficial to a tank. These can also benefit the fish by enabling them more oxygen for the purpose of breathing. Aquasstar air pumps are offered with efficient pumping efficacy. Plus, these are well known for their functional accuracy and high pumping efficiency.