pics dont work.. if these leave are curling down or browing/yellow at the top more than the bottor or only at the top than this is most likely heat issues. how hot is it. get an accurate reading
I used the "put my hand up to light and test, if my hand does not hurt the plants are okay". But to answer your question Stgeneziz, about 7 inches above the plants was the MH with a fan blowing between them. I did not think a 4ooW could burn them.
Deffinatly burnt, when your plants are this big they shouldn't be closer than 1 foot away from the light. Also your room could be too hot make sure you have proper intake and outake.