Evolution Aqua Dual Union Check Valves Size:1-1/2" SLIP UV lamps and quartz sleeves

UV lamps and quartz sleeves

Feed 2-3 times per day for water temperatures between 56-80 Fahrenheit

5" FPT 5" Diameter x 4

Permanently-sealed watertight fixtures can be used in or out of water

45 mil rubber liner and underlament

Evolution Aqua Dual Union Check Valves Size:1-1/2" SLIP UV lamps and quartz sleevesEvolution Aqua check valves are essential when using a waterfall filter in conjunction with a pond skimmer. The check valve will prevent water in the filter from back flowing into the skimmer when the pump is switched off and keep water in bogs when the pump is turned off and other purposes. Check valves are also essential when an external pump is being used. The check valve prevents the water from draining back into the pond or reservoir, keeping the