I am having the same problem, I believe my soil ph is too high and my watering/nutrient solution has been too low...not sure.
Skunk Sativa Downward Leaf Curling! Please Help
Any help is greatly appreciated.
Thank you all for your help/feedback!
Here is an update...
Not sure what is going on...I manipulated the water and nutrient schedule and thought things were looking up, as the new growth was looking really good, but, it seems to be reverting. I lowered the ph of the watering/nutrient solution...
Thanks Stretchtastic...I had the same thought and will be testing the soil ph as soon as possible. I've been giving them water that is right around 6.0, I was wondering... if you continue watering with the same slightly acidic ph level, if, over time the soil ph gets increasingly acidic...
I've had my plants growing all summer and am wanting to flower a.s.a.p., but, my sativa has showed signs of deficiency so I'm hoping to get that resolved before moving ahead.
I've got them under a 4-foot 8-tube t5 with a few t12's around the side and just got another 2ft 8tube t5...