[Birdman]

Quote: Originally Posted by Rich L I couldn't read the gauge. Did you account for verticle head. It should be around 1 pound there. It will show up if you turn off the pump and you can subtract that from the pressure dropacross the operating filter.

Hi Rich, glad to see you here. I didn't look at the static pressure and have the system shut down and drained now. Super cold temps here. I have the three valves so I can balance the flows. Should be flowing about 2,000 GPH per line. Check my indoor pond nthread for pictures of the outlet manifold installed with two UV's and a heat exchanger.