Sunterra"s clean water fountain pumps provide the appropriate water flow for varying fountain sizes and have a 1 year limited warranty. These pumps are utilized for Sunterra"s extensive line of fountains and water accents. They operate efficiently for extended periods of time with no regular maintenance required. These pumps are magnetic driven. These pumps run by an electrically charged magnet that causes the impeller to spin and circulate water through the pump. Magnetic drive pumps are environmentally safe, have no coolants, and use less energy than direct drive pumps.