Aqua UV Ozone/UV Combo 200 Watt 2″ – White Aqua Ultraviolets Ozone/UV 200-Watt Units contain five lamps for top-of-the-line water sterilization for both freshwater and saltwater tanks. This unit can sterilize up to 13,000 gallons of freshwater and 1,500 gallons of saltwater, making for a heavy-duty system to keep your aquaculture units clean.Ozone/UV 200 Watt Unit(PN: A00228) Ozone, 200-Watt Unit, 2 Inlet/Outlet, White, NEMA Transformer, 120V/60HzSpecificationsDimensions: 40-7/8 x 14 x 17-1/2Number of Lamps5120 Volt Amp Draw2.18Grams PD120Water Sterilization MeasurementsFreshwater: 8,500 13,000 GallonsSaltwater: 1,500 GallonsRecommended Flow Rate for UV Dosagesat 30,000 w/cm2 (EOL) GPH: 6,600 (Max Flow Rate)at 45,000 w/cm2 (EOL) GPH: 4,400at 60,000 w/cm2 (EOL) GPH: 3,300at 75,000 w/cm2 (EOL) GPH: 2,640at 90,000 w/cm2 (EOL) GPH: 2,200 (Min Flow Rate)Information for Reef TanksA UV rated in the 30,000 or 45,000 w/cm2 (EOL) is ideal for the reef environment. UVs used at higher kill rates will destroy the planktonic food supply for the reef.Information for Marine Fish(No reef or live rock) A UV rated in the 75,000 or 90,000 w/cm2 (EOL) will be the most effective at controlling fish disease. All UV dosages are calculated at the end of lamp life (14 months).