Donya,

I'm glad you got your CC cleared up. Did you ever try measuring CCs soon after adding the PolyQuat and then just before adding it again a week later? Alternatively, if you start using PolyQuat again, let us know if you see the CC showing up again. If you do, then that would be a good indication that PolyQuat may measure as CC. If you don't, then you may have had some persistent combined chlorine that high FC levels got rid of (the high FC levels would very likely get rid of any remaining PolyQuat as well).

Richard