Thanks for the quick response, Ben. I do understand I need to get the chlorine levels up with the CYA so high and have been referencing the Best Guess chart. Hence, the trip for bleach. Should be up to par again by tomorrow morning. At least the water has been solidly crystal clear for the last 2 months, with no algae, even in this heat. But regarding the pH.....I get that I have to keep it down. My question - is 7.8 OK, or do I need to keep it at 7.6, regardless of constant acid demand? I do realize my LSI is high right now, with scale a threat, which is one of the last things I want. It's just that the pool seems to want to stay at 7.8.

The site is such a help. Thanks for keeping us straight!