How'd I miss that the first time! I'm dumb and inattentive sometimes. You really could have only used 2 90s on that return and had a straighter run. So for all those "every gph counts" people, you'd make 'em happy. If you are happy it looks solid, and you fixed some issues.Ok I took everyone’s advice weighted for internet points and feasibility. Here is the new configuration. I added in that expensive one way ball check valve and removed the manifold. I’ve decided when I need UV I’ll just use a separate pump my Apex can control.