I've read through Pool School and I must be missing something. I found the Chlorine/CYA chart. So I know what my FC currently is, I know what my CYA is, and I know what shock level I'm trying to get to (in this case around 28 according to the chart). What I can't find is a chart that tells me how much bleach I need to add to my pool to go from 5FC to a shock level of 28FC.