Super critical auto

Done abit of lst this week on a few of the big ones First timer not really got a clue what to do so trying trial and error One half the back of tent got a trellise over them the other half have had the fam leaves tucked under and the ones you see under the smaller light have been tied down about 90 degree angle Also a few showing signs of maybe nutrient deficiency of some sort could anybody give a hand as to what this is also something I’ve noticed over the last week a lot of the leaves look almost chewed off complete fan leaves gone only the stem left this is a indoor grow first time I can’t seem to see anything in the tent or any signs of snails or slugs and I’ve put it down to water landing on the leafs and burning them away completely (pot head conspiracy ) any help would be much appreciated please