Ok I have been filling and draining the pool, got the CYA down to 70. Gonna keep at it tomorrow, and I’ll be good on cya. For the future, should I try to use as little tabs as possible? I think the past two years We had plenty of rain, and this may have been appearing to be less of a problem. Also, I never used the shock packets, until I ran out of regular bleach last year and someone bought me a 10 pack of them. Lesson definitely learned here. Thanks again for all the advice, hopefully I’ll have better news by tomorrow evening!