The .5 loss sounds much better. I agree with Gene, if Rusty doesn't mind, ask him to just start checking an AM and PM CC level too when he checks the FC level) because with it at 2ppm the past 2 days we want to keep an eye on it to know if it is going up, or down, so we can tell more about where you are in the process.
And No, I did Not know you guys hadn't been swimming at all. That breaks my heart because you all are missing out/have missed out on your Summer fun because of that stupid algae, and I'm so sorry. I was hoping it would have been all gone by now, but the numbers keep telling us it isn't all killed out yet.
Like I mentioned before, it is safe to swim with the chlorine at Shock level, or lower. The bleach added in a washing machine raises the chlorine level to approx. 500ppm which is a huge jump from the 20ppm in your large volume of pool water right now. If you do decide to swim, I do suggest that you wear an older bathing suit vs a new one, as the higher chlorine my lighten the color, of course try to avoid drinking any of the water

, and that you shower afterwards just to rinse any chlorine off your skin, but you should do that regardless of what the chlorine levels are in your pool.
So as long as you check the FC level, and it is at 20ppm, or less, you guys can safely swim, if you want to. Just let the levels drop to or slightly below shock level, you and the family swim up a storm, and when you're finished just bring it back up slightly above shock level, and all will be fine.
Hopefully, your SLAM will soon be finished I hope, I hope, I hope.
I still can't believe though that there was that much hidden algae/organics in there, yet your water appeared clear, (lol well until you hit it with the extra bleach the 1st time), but the chlorine drops, and CC increases tells us there was/is algae/organics in there. So if the FC level will stop those big drops, and the CC drop back down to .5 or less,(which the chlorine is doing what it does to kill all that stuff out of there), then I'll be a happy camper, and I know you, and Rusty will be super happy campers too.
I'm continuing to keep my fingers crossed. Again I am so sorry that it is taking it so long and that the numbers will start to look like they are going to level out for you guys so you'll be able to finally pass OCLT, and then BAM, something else gets stirred up again. But again, you guys are doing everything you can do to get it killed out of there so keep up the great job, and have a wonderful night.
