T-H Marine T H Marine Oxygenator Pro Livewell Flush Mount. The Oxygenator manufactures 100percent pure oxygen by splitting the hydrogen molecule from the oxygen molecule in water. This creates a super-saturated oxygen environment even in the warmest water. No switch required automatically activated when livewell fills with water. Silent running. 12V DC drawing less than 1 Amp. Features of T-H Marine O2-BK3-DP T H Marine Oxygenator Pro Livewell Flush Mount Retrofits most boat livewells from 10-20 gallons Operates off existing boat battery Creates super-saturated oxygen environment even in warm water Activates automatically when livewell fills 12V DC draws less than 1 amp Package Contents: T-H Marine O2-BK3-DP T H Marine Oxygenator Pro Livewell Flush Mount T-H Marine O2-BK3-DP: T H Marine Oxygenator Pro Livewell Flush Mount