pop quiz

all my stems leading to my fan leaves are red

what could be the problem?

Same thing here I have been told on here it could be temps or nutes. I think mine is temps my area get to around 65F at night when it gets below freezing outside. Post pics if u can for the pro's which I am not.

ya, my temps drop during the night as well. could be it i guess

i'll keep an eye, i have a veg box goin too, that stays at like 70-80 always

i'll compare the two, tho it's not the most fair comparison since it's veg vs flower

anyone else have this happen? just the red stems leading to the fan leaves?