I started compiling a list of equipment for plumbing my return and manifold. After measuring and looking at parts and fittings, it seems more appropriate for me to plumb my return with the 1” flow sensor and appropriate fittings and to power the manifold via a separate pump. I don’t have much room in the sump, but I think I can make it fit. Doing so will give me more control over maintenance, and it will allow me to make changes to the manifold without shutting down the return pump.
This will allow me to get my system up and running sooner since I can build the manifold after the system has water in it.