White PVC Spring Check Valves, Female Threaded Ends (FPT) Crystal Clear Note: May attract herons during

Note: May attract herons during mating season

Photo also shows Norus pump (Not included)

This means very low maintenance and effective aeration system

Low RPM and High Head models are also available

Will not inhibit bodily function when used regularly

White PVC Spring Check Valves, Female Threaded Ends (FPT) Crystal Clear Note: May attract herons duringCheck 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