On my desk today is a copy Service Industry News. On the front page it reads, "Cyanuric Acid & Chlorine: It's all about the ratio". As I read it it is spot on and in agreement with what is provided here. The best part is, it sites the extensive research done by Richard Falk in this field, I don't think I need to tell you who he is.
Next up---the x10 rule for CC.
The article can be read here: http://www.serviceindustrynews.net/