The UVS-11 is an incredible value. It has a high quality quartz sleeve, an 11 watt PL type lamp, 10' power cord and an elliptical lens to check the UV lamp status.
It can handle a 75 gallon aquarium, giving out 30,000 pw/cm2 with tank turnover of 3 to 4 times per hour.
A flow rate of 75-100 GPH will kill most parasites. 225-300 gph will kill bacteria and algae. The lamp will last 6 months to a year if run continuously - longer if used intermittently. The pump to run water through the U.V. sells separately. We sell high qualityaquarium water pumpssuitable for this application.