your probably right, I know how you feel. don't want anything to go wrong this late in the game. if its not spreading a lot, just may be those leaves time since she's getting close to the end of her life cycle. I actually had some leaves looking either mildly nute burned or deficient when I did my rez change today. I backed the nute solution down 0.05 hoping that corrects it. Saw some frosty leaves for the first time and was happy af.