Supreme Hydroponic 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 electricity and come with a 6' power cord. The oil-less motor is designed to operate efficiently and save energy. Aerates Nutrients to Stimulate Root Growth Energy-Efficient Design Easy to Use Quiet Operation Accepts Standard 3/16" Airline Tubing 1 Year Limited Warranty