Very wierd...

Ok so i just checked on my plants for the last time tonight and i went to see than all the new growth on all my plants are tacoing? wth? I have never seen or heard of them all doing it at once when i have not changed anything in the grow area. Any ideas guys?

This is usually the result of heat stress. How close is your light and do you have good air circulation?

I have 2 t12's bout an inch away from each plant but they make no heat i can hold the bulb forever and not even feel anything. I have a fan running all the time. Could under watering also make that happen cuz i put in about 1L and it perked back up, they weren't yellowing or drooping though. I have read that this is a Mg defficiency but i just transplanted about a week ago into FFOF and i dont want to nute burn them cuz that soil already has nutes in it.