awesome il come back and check up on the pics. Remember that it's very important to look at everything as a whole and the condition the plant is in before making a decision. once a remedy is made and if it ended up being wrong, your plants can become worse than what they are now. Ya it's temps 
you can't rub it off and from looking at it it's deep tissue the whole leaf and underside are affected.
you can't rub it off and from looking at it it's deep tissue the whole leaf and underside are affected.
