Just my 2 pesos, but your girl looks ok. Could be something I'm not seeing, but...If you feed N through the stretch, you don't have much to worry about, but a shot of PK round day 35. Frosty looking.
Little caution here. PK13/14 @ week 3 or day 35ish - In my experience, with soil at least, one good dose @ 3ml-4ml per gallon, or maybe two (at lower strength) is good enough until harvest. Even for the 12 weekers.
Meh. That can be a few things. Over watering is when I catch it. But, I've been reading and can't find anything wrong with your lineup. It's always sketchy around harvest. We start thinking of ways to improve, and think that how we've gone about things, and assume that they are automatically less than awesome....but, dude, that's fine. That just means we're seeing patterns and, wow, this totally came off preachy, but, you're doing awesome. That was what my original post was supposed to entail... Cheers boyo.
EDIT: BEST ADVICE EVER: Try to avoid mixing and matching advice from too many different cooks in the kitchen.. They all make good soup, when they work alone.. that is to say, every system is a complete self contained set of variables.. and there are as many ways to reach the goal of making soup, as there are cooks..