I've tried the cold and it's not working for me =[
Weather where I'm at is 10-25F and I can get my temps down to 30F with lights on if I turn Inline on full blast and down to 10 or less with lights off.
I've attempted it on a side plant and I can't get any color just stress.
Looks awesome. If its not close to end I would add phosphorous probably. Burnt tips though so I am inclined to think there is a salt buildup. So perhaps a flush is in order.
I have done a few grows but I have never had a plant turn purple like that. I wasn't sure if it was a deficiency or just an epic plant. But yeah its almost at ten weeks there's a lot of cloudy trichs but I have yet to see any amber.
Im not sure it was a freebie from nirvana that I got when I ordered. The freebies don't say what strain they are so I have no idea. I will try and get some pics of it after I dry/cure it.