Wow, alright, a few things. Unknown will need to be tied, she is getting a little heavy now. Pineapple has been without nutes now for about 9 days whilst preparing for harvest. Northern Lights is just taking off but has some color changes which are concerning me.
Pineapple Express Auto...
Apparently it is a 'decent' medium but not recommended. Miracle-Gro is tailored for people using the medium outdoors and with a hose thus meaning that they come jam packed with nutrients and could be very detrimental on a seed and it's growth.
Haha, yea, I know right? I don't know what's up with Holy Grail but I think she was heat stressed at one point, this is her recovery, a mutation if you will.
Thanks man, I need to raise the other girls though. Unknown definitely reached for the stars.
Although this image is far more stressed than your plant, it still shows the ruffling of the leaf edges that you have in common.
This was pulled off of a search for Marijuana heat stress.