Well, I installed my SunHeater panels on the roof. These are 2 2x20 panels with one-way flow (costco kit different that what's on their website).
The highest point of the panels is about 16 feet above ground level. The plumbing from the pool runs about 50 feet to the riser, through the panels (serially), down the return, and then another 50 feet back to the pool. I plumbed with 1" irrigation pipe. The distance was necessary to reach from the pool location to the nearest south-facing roof.
After hookup I found there was no flow back into the pool. After unhooking various sections I find that some water would return to the pool location but insufficient pressure to overcome the climb back into the pool plus the back-pressure on the inlet hose.
So, I guess I need a more powerful pump?
The question is, how powerful? The existing pump is the Intex model that came with the pool. It's 1.1 Amps. No horsepower or CFM rating that I can see. I want to get decent flow but don't want something too powerful either. Not sure how to determine a properly sized pump. Any recommendations?