About this item [Pumps 200 GPH] Viagrow Four Valve Air Pump can move 3.4 liters of air a minute per valve or about 200 gallons per hour, perfect for multiple air stones [Low Power Consumption] Powerfully circulate air throught your system wth this low power consumption, high energy saving pump. the Viagrow Air Pump only uses 8 watts [Lightweight] This four outlet air pump is lightweight and compact, only 3 pounds, making it easy to store and use. [Super Quiet] Viagrow’s state of the art technology allows significant air flow with very little noise, only 35-40 DB, allowing for comfy, whisper quiet operation. Power source type: Power Cord