White PVC Spring Check Valves, Female Threaded Ends (FPT) Size:1-1/4" FPT 12 AWG 1/2" 10 AWG

12 AWG 1/2" 10 AWG 3/4" 8 AWG

Nexus320 56

The first ever natural bacterial algaecide registered with the EPA (Environmental Protection Agency)

Eliminates plugging of irrigation lines and pumps

Removable chamber allows easy media replacement and pre-rinsing

White PVC Spring Check Valves, Female Threaded Ends (FPT) Size:1-1/4" FPT 12 AWG 1/2" 10 AWGCheck 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