Strange looking plants... (pics)

So about 2 weeks ago I noticed that two plants in grow closet #1 were growing very strangely. I thought that maybe it was heat stress, so I promptly removed the tinfoil that I had neglected to take out from both closets, and I kept watering them every two days. Since then, I have found 3 more plants in the second grow closet that were doing the same thing, and I cant figure out what is causing it! The temps inside the first closet is around 80, and the second is around 75. Any ideas?

(The first pic is from about 2 weeks ago, the other two are from today)

Meh, they do that. I've cloned and topped a lot of plants and many of them go all weird, but usually straighten out.

They are from seed and none of them have been topped

they look healthy, just contorted. whats the nuts/ph if your using em?

i had the same problem with hydro, because i was watering one side and not the other so it was un evenly growing

I just started using fox farm big bloom, but I haven't used any ferts until now. And I have yet to invest in a Ph tester...