WaterBuster Power Pump Drains the spa quickly and effortlessly. The WaterBuster Power Pump is completely submersible and pumps up to 200 gallons of water per hour. No electrical cords necessary - operates up to 5 hours on 3 D-cell batteries (not included). Includes a 3' hose and adapter for any standard garden hose. Can also be used for a variety of other household tasks.