Natural Current NCAIR150PONDO3 Pond Airlift Plus Pond Lake Water Ozone, 25000-Gallon Pool airlift came from the vision and innovations of natural current for new types of water energy efficiency and water entertainment Awarded multiple international best product and best green product at the industry expos Designed in Dana point, California by Michael Ingham (H.M.D.G.) Natural current-planet, people and then profit. Made in the U.S.A