I’m assuming that with a week full of heavy rain and about three pool drains to get water level correct it would not be uncommon to see algae forming even with chlorine levels constantly at a 8ppm, salt, cya 60 and above?
So, this statement can be looked at a few ways. Assuming you have an average depth of 60 inches of properly treated water, 5 inches of 0 FC rain can only mix and lower your FC by 8.3%. So if your FC was an 8, it’s now a 7.3 and still great if you were mixing.We had about 5 inches of rain in the past three days.