The Fusion Air Pump 700 is able to operate up to 15 air accessories (depending on size and demand). The patented baffle system allows you to control the flow of air with a simple turn of the dial. It provides ample power to supply your accessories; while running whisper quiet. Using an air pump also adds dissolved oxygen to your water; improving the overall health of your aquarium. For more information on aquarium aeration; please see our article on Air Pumps.