Ocean Blue 350 GPH, Automatic On/Off Electric Cover Pump Not only is this little gem of a pump completely submersible and clog- resistant, it removes 350 gallons of water from your pool's cover per hour. Even better, this Ocean Blue cover pump automatically turns on when your water level is above 3" and automatically turns off when at 2-3". How easy is it to use ? Just connect your garden hose , and plug in the extra long 25' power cord, and you're in business. Maintenance is also easy, as the pump has only one moving part. Reusable foam inlet filter and stabilizing base platform are also included.