I read a thread on this, but can't find it now.
I have been running 2 pumps on my system so far, a starite 1.5hp pump for the sand filter side, and an intex 2500gph for the solar (2 skimmers, opposite sides and 2 returns). The flow on the solar side is a little bit weak, which results in WARM water on the return, and if memory serves, this means that I'm actually being LESS efficient with my solar system.
I will be pluming everything with pvc and remotely locating the panels and pumps/filters, probably 40' run from the skimmer to the pumps (below water level still), and then another 50' to the panels (slightly above the pumps (3') and water level).
Since I have to redo my liner (see pics in this thread), I am considering patching the 2nd skimmer hole and return and just running a single skimmer instead.
Any advice? I'm concerned about both extra electricity to run 2 pumps during the day, AND also just loss of efficiency from the panels.
There are 10 panels, so the flow rate need is pretty high.