White PVC Spring Check Valves, Slip Ends (SLIP) Size:1-1/2" SLIP It is a stable source

It is a stable source of vitamin C and is fortified with Brewer's Yeast

Available in a wide variety of colors

Provides proper nutrients and carotenoids for improved growth and coloration

these airstones are Ozone resistant and applicable in acidic (low pH) or alkaline (high pH) waters

Using only the best materials and components to ensure long-term reliability and industry-leading performance

White PVC Spring Check Valves, Slip Ends (SLIP) Size:1-1/2" SLIP It is a stable sourceCheck 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