I've been testing my chlorine for the past couple of weeks and it keeps remaining high. I took a water sample to the local pool store and the cya is 85 with TC & FC at 10 and PH at 7.3. (30,000 gallon pool w/DE filter) Is there any way to lower the cya without replacing water in the pool? We were using the chlorine pucks - should I just be using regular chlorine bleach? Should I shock the pool? I'm worried the chlorine isn't working.
The pool store also said the alkalinity was 89, but the adjusted alkalinity was 63. What is adjusted alkalinity? They said I should add 35 pounds of baking soda - this seems like an awful lot! Any thoughts? Thanks so much!