PVC Swing Check Valve, 1-1/4" Phosphate Removers 4" diffuser tube lays across

4" diffuser tube lays across the bottom of the spillway in between the inlet fittings (except on 12 inch model)

provide minor flocculation (settling) of mud and clay particles and aid in reducing ammonia

Max Depth Max Pond Size 3-5 feet 1/4 acre 5-8 feet 1/2 acre 8-12 feet 1 acre 12-16 feet 2 acre Pond Calculator Use to calculate the volume or area of your pond

which is a natural pigment that promotes vibrant coloration in the skin of Koi

PVC Swing Check Valve, 1-1/4" Phosphate Removers 4" diffuser tube lays acrossThese totally non metallic check valves have full flow design, which minimizes any flow restriction, and are rated to 100 PSI. Inside couplings are female socket.