Noticing FC dropping 4FC every 12 hours or so. CC is at 1.5.Usually if things don’t clear up after a few slam rounds I say just purge,drain & start over.
I think you caught it early enough that you’ll be ok though.
Make it easy for your wife or whoever to dose upon exiting the tub. If I am not around to test & dose I just have my family add 2oz of lc. - that’s close to 8ppm in my tub. It doesn’t happen often that they use it when I am away but it’s enough fc to cover things until my return usually even if it was a heavy bather load.
Should I leave it uncovered for a while. I thought I read some place that UV can help with CC