BigDave, you are too kind….and most likely a very patient person.

Well, today's results are good and bad I think:
tested last night using 5ml sample. 1 drop = 1ppm

tested @ 11:45pm FC=36 CC=3
tested this morning @ 7:00 FC=35 CC=3

The chlorine loss sounds good, right?
The CC reading of 3 doesn't sound good! (altho I suspect, ahem, it was always testing at around 3 since I failed to multiply the drops added for CC by 6 when I was using a diluted sample…. This one's definitely on me).

So I'm not sure if that changes anything in our approach to getting the pool back in sync.