three week old ogk has a problem

my og kush has had this problem from about the end of the first week. i've sprayed with cal mag about five or six times. not sure what else to do. i think i overwater'd a little the first week but i bounced back from that. i'm still getting leaf curling. i'm getting good growth rate now but not as good as it could be. anyone have any pro opinions.
 
Top