Active Aqua Air Pump, 8 Outlets, 12W, 25 L/minDescription Air Pump with Multiple Outlets: This air pump comes with 8 outlets, a multi level muffler, and low power consumption. Special artificial rubber is used to maintain a constant air flow output and pressure that can be adjusted according to necessity. It is rated at 400 GPH and uses only 12W equal to 25 L min. Super Silent Operation: Engineered to operate silently, this air pump features a special mechanism that reduces noise to a minimum.