Thanks for the encouraging words, they really help. I'll keep the FC at 25ppm until it holds within 1ppm overnight and the CC is no more than 0.5.

I've been keeping everyone out of the pool and will do so until this is done, but when I looked at the Best Guess chart, it looks like a quick dip might be okay and the high FC would pose no danger to the swimmer (although designer swim suits and dyed hair might lighten). However, I don't know if the pH and TA levels need to be considered. Several days ago, when I last measured pH (before I was keeping the FC so high) it was 7.2 and the TA was 170.

Watermom - What do you or the other experts think - stay out of the pool or allow a quick dip? (Of course, I would be sure an hour or so had passed since the last bleach addition).

So far today the readings are:
7:30a FC 19.0 (added bleach), CC 1.0
10a FC 25.0
Noon FC 21.5 (added bleach)
4p FC 23.5 (added bleach), CC between 0.5 and 1.0

I'll test again when I get home and post the overnight numbers.