So the time has come to redo the plumbing on the pool. Does the sizing the looking correct in the attached picture? High level - there is 2" coming from the skimmers and main drain to filter. From the Filter it steps down to 1.5" then steps up to 2" at the SPA/POOL return valve.
Also I was thinking I should install a Spa make-up valve are there pros/cons? and what should the pipe sizing be?
Any feedback would help.
Its a 40k pool with FNS PLUS and 2hp Pentair