I've read a ton about pipe size and am convinced 2.5" returns from the skimmers and main drain help move water more efficiently. What about PVC Flex Pipe? What are the pro's and con's? I've read in some spots that bugs (termites) can eat through it and cause leakes?
My pool is 34 x 18 free form salt water gunite pool. I've got 3 small (off a raised beam wall) rock water falls and a 7.5' inside diameter spa which has a rock waterfall into the pool. The spa suction will be 2.5" as well, is that a good idea and should I also put 2.5" returns to the spa to help increase the flo in my spa? I want a spa, not a hot bath, so I want plenty of power from my jets.
I'm going to use 2 Intelliflo VF pumps. 1 for the pool and 1 for the spa and water features.
I've got about a 3.5' elevation from my pool up to my equipment (pool is lower).
I will use an intellitouch system i5, I believe. Any issues with that system working with this set up?