White PVC Swing Check Valves, Slip Ends (SLIP) Size:4" Slip ) Every 30 days

) Every 30 days

The air diffusers allow you to easily add much-needed air circulation to ponds that increase oxygenation in hot weather

Suction Starter cap opens for easy priming of suction line

the Ultima II patented cyclonic backwash separates the waste and flushes it out the waste line for easy cleaning

White PVC Swing Check Valves, Slip Ends (SLIP) Size:4" Slip ) Every 30 daysCheck 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