I usually do not test for cc but did today. I got a .5 on my CC. I did just shock the pool last Friday and my chlorine is getting used up very slowly it seems. I shocked to around 15 and when I just tested it was at 4, so like 1.5 or so per day.
So do I need to worry about the CC? I have been swimming the past few days and do not really smell chlorine or my eyes are not burning which is what it says it does in pool school.