"Ultra-V" Ultra Violet Sterilizer Operating Principle: The "Ultra-V" Ultra Violet Sterilizers are excellent choices for Freshwater, Saltwater and Pond applications. These units are water tight and utilize hard quartz sleeves for peak performance. The design also allows for UV Bulb replacement without the need to remove the unit from it's installed position. Allowing for a maximum flow rates up to 100 GPH, these units are designed to be used with your favorite water pumps. Based on a 70,000 æW sec/cm2 (microwatt seconds per square centimeter) the flowrates are as follows: 16 Watt UV Unit 430 gph 40 Watt UV Unit 1000 gph 60 Watt UV Unit 1500 gph By changing the flow rate through the UV unit you will change the effective "kill power" of the UV unit. For example: If you only allow 215 gph thru the 16 watt unit, you will effectively increase the kill power to 140,000 æW sec/cm2 (microwatt seconds per square centimeter). And also the opposite, by increasing the flow rate you will lower the "kill power". We have included a chart to help you calculate your flow rate depending on the "kill power" needed for the corresponding Micro-Organisms. Waterborne Algae 15,000 to 30,000 æW sec/cm2 Common Bacteria 15,000 to 30,000 æW sec/cm2 Protozoa (Ich) 45,000 æW sec/cm2 Fungi 45,000 æW sec/cm2 The "Ultra-V" is made in the USA and has a 1 year warranty on the Unit and Ballast, and 30 days on the UV Bulb and Quartz Sleeve. Basic Installation: 1. Open UV Unit by unscrewing endcap. (End with cord coming out of it) 2. Slide UV bulb into Quartz sleeve. 3. Connect UV Bulb Plug from Inside the Endcap to UV Bulb 4. Install endcap back onto UV Unit, be sure O-ring is positioned correctly. 5. Install appropriate fittings into threaded sockets on UV Unit. 6. Install hosing from pump to the UV Unit, and from UV unit to return water. 7. Install clamps on all hosing. 8. Mount UV Unit in desired location. 9. Plug UV Unit in GFCI grounded receptacle. 10. Turn on water pump with desired flow rate determined from above chart. 11. Check for any leaks. Tighten clamps if necessary. 12. If UV Bulb replacement is needed. Follow steps 1-4. 13. For Quartz sleeve cleaning or replacement follow steps 1-4, then Unscrew plastic retaining ring around quartz sleeve. Remove rubber Grommet. Slide Quartz sleeve out of unit. Clean or replace sleeve and reinstall in reverse order.