Quote Originally Posted by ScottS View Post
I get my pucks from KMart because the the AquaChem pucks do not contain copper.
AquaChem is one of Chemtura's companies. Chemtura is also Bioguard, Omni, Guardex, Hydrotech, Sun, and Pool Time. These are the people who feel that CYA up to 200 ppm is accetpable in a pool. I was on the phone with AquaChem yesterday about their test kit (and never got a good answer even after speaking to three different people about the hardness test) and they told me that they didn't feel that high CYA levels were a problem as long as they were under 200 PPM!