Pondmaster® 04520 AP-20 AP Series Air Pump 1700 CuIn/Minute. PONDMASTER AP-SERIES AIR PUMPS have been designed to satisfy the requirements of a multitude of water-related applications. All AP-Series air pumps operate on standard 115V electric and come with a 6' power cord. The oil-less motor is designed to operate efficiently and save energy. For outdoor applications, it is recommended that the unit be enclosed to protect it from the elements.