I have finally decided to take control of my pool and have been reading the Pool School and these forums the past few weeks, but I do still have a question regarding the shocking process and how it affects combined chlorine. I *think* I understand the relationship but want clarification/confirmation.
I understand that the TC = FC + CC. What exactly is combined chlorine? I originally thought that chlorine "combined" with the organics (e.g. algae) to produce CC but I don't think chemical compounds combine with organic material (I'm a few years out of school ) so that means the chlorine combines with other chemical compounds in the water to produce CC, but which what chemical? Shocking then oxidizes the CC into...what? How does adding more chlorine break down CC? And what is the result of that process, meaning does that produce other chemical compounds that have to be worried about?
If these questions can't be answered without a chemistry explanation, just tell me "that's how it is, deal with it" and I'll understand