SHIRUBA K8000 2 Outlet Air Pump (Powerful)With the use of an air tube splitter. the K8000 is suitable to power 2 4 air sponge filters, for smaller tanks. Fantastic for use in fry tanks of hospital tanks, where the flow rate must be adjustable, and the pump must be reliable. Double nozzle outlets 3 Speed air flow rate, High, Medium, Low Increases dissolved oxygen in water and helps aerate the water removing some harmful gases in the process. Double layer insulation design for low noise(<50 dB)