If it was over fert wouldn't I be seeing something on the leaf tips? Man I stay to medicated, lol, but I swear it was on the first plant before I even added the fert. Also I ferted like a week and a half before it showed signs on most plants, but I did transplant a week after. You raise an interesting arguement Canni. You really think 15 mL/gal of Grow Big would've done this after transplanting into FFOF?