The Ultrazone Series Ozone Generators clean up aquarium water by removing unwanted organic decay, proteins and pollutants. By eliminating harmful organics, ozone increases the longevity of all marine life. The Ultrazone Series Ozone Generators manufacture ozone by passing oxygen molecules over a specially designed light source. The ozone creates superior water quality providing aquarium inhabitants with a clean environment for living and reproducing. Both the 'Ultrazone Mini' and the 'Ultrazone 360' are praised by hobbyists and professionals for their safety, performance and low maintenance. These generators Do Not require an air dryer as is the case with other ozone generators.