Pool has been open since April 4. I've just been maintaining since then with no swimmers due to water temps running 65 - 70 degs. All the numbers have been good except the cya is sitting at 80 or 90. It was off the charts when I opened, probably around 140, but has been coming down with the frequent rains.
I've been running the pump 10 hous per day with the ozone generator set at approximately 25%. I skipped testing on Wednesday but found the FC at .4 and CC at 1.8 at noon on Thursday. I try to maintain FC at .5 to 1 so I added a pint of 8.25% bleach and turned the ozone generator up to about 75%. When I tested at 6:00 pm, FC was at 2 (I over shot a little) and CC was down to .2. Tested first thing this morning and CC is now at 0.
I've had some skepticism of the claims made by the pool builder concerning the ozone generator. I'm only 10 months into this new pool, but very pleased that the ozone generator came through and diverted a slam.