Help protect your pump! The auto fill will automatically adds water into the pond or water feature when the level drops below the fill level. The auto fill valve must be connected to a constant 1/2" water source.
If you have a quartz sleeve make sure and clean it with acetone when you change your bulb to truly have a clean quartz sleeve. As a general rule of thumb, you should change your UV bulb after about 8,000 hours use. This is about once a year.
