So I have Blue thunder under 450 w LED 20” away from canopy. They have slowly been getting odd misshapen holes or burns on the leaves is this the plant just eating itself. A week ago I had learned that I wasn’t giving the right amount of nutrients for a month ( under feeding). I have checked every inch of the plants for bugs or poop on the leaves and stems but nothing can be found. All help is welcome. Thank you in advance!!