I'll report back in the morning.

Looks like the rain may be re-grouping and we may get some after all. I won't hold my breath

From what I understood in the "lower your alk" sticky, if you don't gas of the C2O when the PH is down it can convert back and measurable alk goes back up with the PH.

I'm hoping that my previous aeration efforts were just inadequate. We'll see.