"Ultrazone" Electronic Ozone Generators by Ultralife Reef Products Basic Operating Instructions: Without Redox Controller With Air Pump Connect air line (from air pump) to the connection labeled ‘IN'. Connect air line (going to protein skimmer or reactor) to the non-labeled connection. Plug the power cord into a GFCI protected grounded receptacle. Adjust air flow to meet your needs. With Venturi Connect air line from venturi to the non-labeled connection. Plug the power cord into a GFCI protected grounded receptacle. Adjust venturi air flow to meet your needs. With Redox Controller Follow above instructions for air requirements. Plug the power cord into your Redox Controller. Follow Redox controller instructions for proper setup. CAUTION: AIRFLOW MUST BE IN THE PROPER DIRECTION TO AVOID DAMAGE TO THE OZONE BULB CHAMBER. IF THE UNIT IS INSTALLED IMPROPERLY AND DAMAGE OCCURS, THIS WILL VOID THE WARRANTY. Ozone Bulb Replacement Instructions Unplug ozone generator from the outlet or Redox controller. Remove the airlines from ozone chamber. Remove the 3 end cap retaining screws. Gently pull off the end cap and attached ozone chamber. Unplug the power connector from the ozone bulb. Remove ozone bulb retaining nut and rubber gasket. Slide the ozone bulb out of ozone bulb chamber. Install new ozone bulb in reverse order. Warranty Ozone Bulb: 30 days from date of purchase. Ozone Unit: 1 year from date of purchase. All returns for warranty MUST be accompanied by dated sales receipt, Return Authorization number, postage paid and insured.