Unlike filters which have to be placed at the top of the waterfall, the Versatile Filter can be located either at the top of the waterfall or up to 10' away. The filter is easily hidden behind fences, shrubs or surrounding landscape.
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.