heat stress

Hey guys I was wondering if someone could tell me the symptoms of heat stress. My grow room stays around 86. Is the leaf curling a sign of stress?

25 Degrees is around the temp your room should be at. May i ask if you have any pictures to show us how they are curling? Some macro shots would be handy if its a fairly early staged plant =)

Good luck

yes I do they are in my journal they are the latest pics taken