Bgray,

No prob....I heard what you were saying...just didn't clarify my answer.

Short answer - keep it up there 'til your water looks crystal clear.

You wont waste any Cl...that high level will simply kill all the bugs an dthen keep doing it's job keeping your pool sanitized. As it comes down, you would've used just as much at lower concentration.

Now, once your water is crystal (and it will be) let it drift down and then maintain it between 5-10ppm...that's your maintenance level and the level you need to keep your pool sanitized at that CYA level.

Nor will you consume excess bleach at that maintenance level. You will simply be holding higher concentrations than someone with lower CYA.

Order Ben's kit to reduce your testing workload. I think it's mandatory for keeping your pool clear year after year.