Hello people, it’s been a while and hope all is well for all of US! I started a new grow( bubba kush) and my lower leaves all seem to be clawing/curling. I’m in need of input to figure this out. Thought it was PH problem so I changed nutes.I’m not seeing any bugs( use diatomaceous earth etc to prevent them). It has been rather cold out past few nights so... just not sure. Would appreciate some input from any GURU who cares to chim in. Thanks!