HELP plant starting to act strange

I woke this morning to find some one of my leaves yellowing at the tip. I just got home from work and the plant has almost gone up all leaves/ stems are facing up almost like its trying to close up what would cause this? i checked they were a little dry so i watered them they have not got any nutes yet just whatever was in the ocean forest soil were they just too dry?

was also really warm here today like 88 outside would heat cause this?

anyone i want to fix this before the rest of them end up the same way

need a picture to tell keep soil moist

heres so pics sorry for quality but you can get the idea anyone have any suggestions?
Marijuana Growing - sleepsmoke's Album: First Grow - Picture
Marijuana Growing - sleepsmoke's Album: First Grow - Picture notice the yellowing/browning on the one leaf
Marijuana Growing - sleepsmoke's Album: First Grow - Picture
any suggestions would be greatly appreciated

can anyone look at these pics and tell me whats going on?

thanks man it needs n so foxfarm grow big? ill go pick some up tomorrow

was trying to hold off on nutes untill 3 weeks old but should be ok to use them now then?

they are under t5 lights about an inch away

3 hrs later plant is starting to relax and spread back out thanks for the help guys

what you were seeing is totally normal, I had my baby outside for the first month and early in the morning the leaves would be all erect and pointed up and they would relax as the day went by, then in the middle of the night the leaves would become erect again. just another mechanism of flora, theyre feeling shit out, readjusting as they get bigger. Go look at some time lapses of a full grow on www.youtube.com the leaves are constantly waving up and down up and down.

thanx all everything back to normal this morning heading out to hydro shop right now for a bottle of grow big