need help with leaf problem

I woke up this morning and checked my girl and the top leafs are folded in half upwards and a few of them and a few lower ones also have some brown spots on them. I watered the day before and added a few nutes. Im in my 3rd day into the 12/12 cycle and my light has been 13 inches away my entire grow and temp is 78it any advice about the leaf folding and spots would be helpful thank u .

Pics will help with responses mate. Hard to give opinion without one.