Yeah, I was pretty sure that was a typo. I would suggest one more dose of chlorine to reach breakpoint (shock) and get virtuallu all the CC's out of there. It will probably have dropped some more so test again, and add enough to bring it up to 15-18ppm total.....that should clear up almost all the bugs.

I personally don't use polyquat but I don't close my pool, either. Most folks that close do seem to use it as part of the closing process. Others more informed than me can help.

By the way, those are nice pool numbers.....good work!