It seems like everywhere I read the recommended chlorine level is between 1 - 3 ppm and doing the BBB method the recommended level is 3-5 ppm with swg. Why is that? In my Intex SWG manual it says the ideal level for free Chlorine is 0.4 - 1.5 ppm ... that is way lower than the BBB method...why?
The manual also states that the ideal level for CYA is between 30-50ppm and the BBB method is between 70-80ppm. Why the difference? Also, I really don't understand the relationship between FC and CYA.
I would really appreciate it if someone would take the time to explain this to me. Thanks so much!!!