I have a solar heater on the pool. We live in Las Vegas. It is hot here
now, between 115 and 120 the last week.

My pool water is 94, an uncomfortable temperature.

I know that if I run my system at night, it will circulate the water through
the collectors, and though night time temps are 90 right now, it should
bring the temp down. Plus, not running it during the day will keep the
circulation from going through the panels and picking up more heat.

My questions:

Does not having the water on and running through the panels in the day when
it is hot damage them? It seems like they would get awful hot. When I cut
down the flow to the panels, the water in there reaches 160 degrees. That
can't be good.

Should I just run it night and day? To keep the panels from getting too hot
during the day, and at night to help dissipate some heat?

We like the temp around 85, and that seems to be about 15-20 below ambient.
But right now, ambient is so high that it comes out at 94. Normal temps for
right now is 104.

Any suggestions or information by solar gurus would be appreciated.

Steve