Quote Originally Posted by timekeeper
The run off is yellowish in color. Ran it through coffee filters, but still has a little yellow tint to it. At that point, the run off tested about 7.2. She's been in that container since the 2nd half of veg. Been on 12/12 for about 5 weeks.

I really want to thank you all for wonderful info and links. I will document much better next time. Now with the c-n-p form, I'll something to look back on from this grow. Just amazing how fragile it all is.
Well except for your ph reading I'd say I was on the right track, the lime from the soil should be depleted by now and you're getting lockout. Still have a hard time believing that the soil ph is 7.2, unless you've been feeding with a really high ph for all this time.

I do my final transplant in week 1 or 2 of flowering, and have no ph issues late in flowering.

Personally I'd try a little transplant where you can get a couple inches of fresh soil around the root mass. Still have a few weeks to go and I don't think it'll get any better.

But maybe wait until some of the more experienced growers (like RustyTrichome) get a chance to look this through.