All of my pool/spa pumps have died. I'd really like to DIY replacement and use it as a chance to replace/change the flow of things. Currently, I have 2 skimmers (one pool, one spa) and one drain (spa) all 1.5" intakes. The main drain on the pool is leaking so it's shut off. That goes into a 1HP pump and a sand filter and then that goes back via 2 1.5" returns to the spa and pool. There is a seperate 2" intake & return line for the remainder of the spa jets (4 more) and another 1HP pump, which is dead.
Am I crazy to think I go to a 1.5 or 2HP pump, a new DE filter and just nix the extra spa pump with some plumbing and valves?
Also, sizing seems to care about the intake pipe sizing, but does the return not matter because there are lots of jets or is the return subject to the same GPM ratings and should be considered?