My pool gets up to about 92 in the daytime and drops to about 84 at night this time of year with my redneck solar running during the day. Once the water starts getting about 95, I stop running the solar during the day. When it starts going higher, I start running my redneck solar at night to cool it off a bit. Almost all pools in AZ include an aerator sprayer in the coping to encourage heat loss through evaporation in the hot part of the summer.