Can someone please explain the chemistry behind FC and CC? (or just tell me where I am wrong here in the below assumptions). If you start with a TC of 10, where FC = 6, and CC = 4. Then you add 1 ppm bleach then (assuming pitch black/no sunlight effect and no time, yet, to work on killing algae) your new TC should be 11. I think FC can be anywhere from 6-11 and CC can be anywhere from 0-4. Is that correct or will your CC only go down 1 ppm because that is how much bleach you added (is there a correlation between what you add and how much CC can go down?) Just been buggin me.