Quote Originally Posted by lisa's pool View Post
... I use the Silk Chlorine Sticks that I just keep in my skimmer. ... Why does my CYA creep up so much every year?? ... After I filled my pool up this year in May my CYA was only 39. Mid June it's already at 80. CYA will climb as long as you use stabilized chlorine as the primary sanitizer.

My issue at hand is that this season my pool #'s are suddenly not matching the pool stores. They are usually very close. The machine read test strips are not accurate. ...
Have a look at: Reviews-of-Bioguard-swimming-pool-chemicals. It explains some of your experience.