First BBB, perfect water. I have a Tf-100 kit and I keep my FC around 5 to 5.5. I noticed sometimes when I do the CC test I have slight pink and 1 drop clears it. I have not shocked in weeks, believe it or not and kids in pool daily with high 90's and 90 degree water. So my CC tonight is 0. Which I notice here and there the same pattern, .5 then 0 for a few days. Is it possible my zeosand that advertises to remove chloramines is removing these CC's? I have really good circulation and run pump 6 hours a day in the evening. After 2 hose issues and a big water loss I start the pump on timer when I am supposed to be home.
I will do a full test set tomorrow, doing the FC test to see if I drop overnight, but there were 6 of us in it tonight.