White PVC Swing Check Valves, Slip Ends (SLIP) Sinking This reduces the levels of

This reduces the levels of toxic ammonia and nitrites in the pond

Do not use with permanganate or chlorite-based treatments

Instructions - No Deck Instructions - W/ Deck

Sized to fit A&L Furniture lawn chairs

White PVC Swing Check Valves, Slip Ends (SLIP) Sinking This reduces the levels ofCheck 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