I got something funky going on with Rainbow Kush. Last week I notice brown/copper looking color spots on a lot of the leaves. My guess is that I am over watering her and/or her soil PH is off. I checked my PH pen and noticed that it needed another calibration. It's so weird because all of the other plants are doing just fine, with no spot or anything.
Great job man, wish I waited another week, got impatient and harvested. Grew a Rainbow Kush Auto, smoked it all just today, bomb taste to it. Finished the top two colas last.