Temp in our newly filled Radiant Metric pool has risen from 76F to 87F in one week (sans heater). Ambient daytime highs = mid 90's; ambient nighttime lows = mid 70's. Pool gets 80% sun most of day. Wx is supposed cool down and rain some next week. Humidity here is high, so evap cooling doesn't work real well.
Fountain will lower temp but won't it raise pH, too?