The Pool Blaster Battery Powered Leaf Vacuum is designed for residential pools and does not rely on garden hose pressure to get the job done. Instead, its on-board motor, transmission and safety clutch combine to lift leaves, seeds and twigs right off the pool floor and deposit them into its high capacity debris bag. Leaf Vac will not alter the pH level. Powered by eight AA batteries (included with unit), Leaf Vac can run up to three hours. | (800) 298-8800 x230