The pergola is aluminum. We like it, but I wish it was bigger. It's as big as allowed by HOA, but I guess if it wasn't attached to the house, that restriction goes away and we could have gone bigger. Can't have too much shade is Az!
We got up to 90 degree water temp before the rain started, I try to run the aireator at night.
HOA's always enforcing stupid rules! I agree, shade is a good thing here.
My water gets up to 90 also. I think the aerator helps a bit. I don't know if running it during the day is helpful or not, do you know?