I installed my solar heating panels last summer, and based on everything I read, I am not getting enough flow through them. Everything I have read says that I should only feel a few degree difference between the pool water and the water coming in the pool after running through the heater. It feels like it is at least like 20 degrees warmer (very scientific, i know). I can measure it this summer to be 100% positive, but I was very disappointed in the performance of my panels this past summer and I am thinking the lower flow might be to blame.
The other thing I am thinking about is that since it is a AG pool and if the panels are off, there is literally like 5-10 feet of piping from the skimmer to the return, that 1hp is grossly overpowered for that small run.
I was thinking about upgrading to a 2 speed so when the solar was off, it would run on low, and when the solar cut on, the pump would switch to high, but I wasnt sure what the top end of the pump should be (1.5hp?), or if i should be using a more powerful IG pump instead of the AG pump.
I can take pics and measure the travel of my pipes to the solar system if necessary, but I imagine its about 40 feet level, 10 feet up, 10 feet down, and 40 feet level back to the pool.
Thoughts? If you need any photos or more info, just let me know.