The Fusion Air Pump 600 is able to operate up to 9 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.