It was kind of a stupid thing to do, and I'm sorry to waste your time, but I was reading some bad advice given to someone else, and thought I'd throw that up there. I wanted to see if someone would tell me it was a boron deficiency and I needed to flush and use some special nutrient mix or something. The correct answer to my question "Is this something I should be worried about?" is "No, it is just one of the many yellow leaves that you get once it's been flowering for a while." The leaf also has some purplish-brown streaks on it, due to a slight expression of the purple phenotype.

Oh yeah, and I was stoned. That's always a great excuse around here! :jointsmile: