White PVC Spring Check Valves, Female Threaded Ends (FPT) Crystal Clear 5" tall at the tallest

5" tall at the tallest point

and an optional stand provides stability for above-ground installation

This means very low maintenance and effective aeration system

Note: May attract herons during mating season

Photo also shows Norus pump (Not included)

White PVC Spring Check Valves, Female Threaded Ends (FPT) Crystal Clear 5" tall at the tallestCheck 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 external pump