I'm thinking of plumbing with spa flex after the OM, I think the discharge side with be completely free of 90s. I was thinking twin 1 1/2 inch lines going to a 2 inch header for the suction, one I can make straight down to the pump, the other will have a couple bends and a few foot horizontal run.
Do you know how much flow restriction occurs in the OM itself?
I like the idea of some slower spots for the lps at he bottom, as long as the gunk in the water will stay in suspension.
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