leave turning completely upside down.PICS someone HELP PLZ...

This plant is doing well, but it has always had a couple leaves bending or curling under, as well as 1 of them completely turning upside down(pic 2)...ive asked a lot of people and haven't gotten a straight answer...Its REALLY bothering me, can someone please diagnose this??+rep for help and suggestions

bump....a leave completely upside down, someone knows why....lol

your plant is possessed its that simple

lmao but seriously its a deficienc of some sort...is it possible its getting too much sun?by the way i forgot to add that when the sun goes down it turns sideways...suns out its completely upside down...wtf.

bump again....

I can't say what the problem is, but I am doing a cfl indoor grow, and recently added more lights. My plant has been in 12/12 for 4 1/2 weeks with no problems until I added the extra light, now leaves around the cola and most main bud sites have leaves that are turning upside down. I thought I read somewhere about it being a nutrient deficiency or build up, I will let you know if I can come across it myself.

thanks for the input man, those leaves are still upside down on that bush of mine, but that plant is doing reallly good, so Im not trippin'...but I do indeed think its a lockup of nutrients caused by pH being off....I really have to get a pH meter