White PVC Spring Check Valves, Slip Ends (SLIP) Size:2" SLIP or you will risk killing

or you will risk killing the beneficial bacteria that have grown on them

and organics (leaves

5" for easy connection of the MTP discharge kit connection

boosts alkalinity and adds eletrolytes

since the AquaBead itself was an investment

White PVC Spring Check Valves, Slip Ends (SLIP) Size:2" SLIP or you will risk killingCheck 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