To Watermom: I never thought to check the CYA levels in the fall. So I don't know if it was high. Do you think doing a partial drain would help?

To Carl: Believe it or not, the first time I brought a sample to be tested at the pool store, I think they used someone esles water because it showed the free chlorine as 5 and a low ph. He told me my testing strips were bad. So I added alkalinity up to raise the PH. I did buy 7 gallons of super concentrated bleach last night. How much should I add at a time?