Quote Originally Posted by Weedhound
They DEFINITELY look overferted if your ph is ok (and it sounds as though it is)

Revised: The Complete Guide To Sick Plants,pH and Pest Troubles - PlanetGanja.com

Try this and see if you can get some good info.

Good luck.
I've read that and my plants can fit a number of symptoms. Unfortunatley I don't have enough expierence to be able to tell which problem is the definite one.

I was thinking heat stress because of 2 of the plants having their leaves arch upwards. Was I way off on this?