I have a sungrabber solar panel for an aboveground pool and I noticed my DE filter pressure went from about 12 to 20 when I added the panel in the loop. Should I be concerned? Or should I find a dedicated pump just to move the heated water, and stay with the main pump (1 hp) to do the filtering?
I also notice the flexible hoses "stretching" because of the increase in pressure. I also have a manual bypass valve assembly to divert the water when I do not want the panels to heat the pool. That consists of two pentair 3 way valves and some rigid pvc pipe and elbows. A few turns that may be increasing the pressure too.