I have a short tent, I guess, only 4 ft tall. Usually, I am good because they are typically 12" prior to going in and the lights are about 12" from the top of the tent, leaving 24" between the lights and the plants. I used to just keep them on the floor level and they always came out perfect. Recently, I've had them sitting on top of pots flipped upside down to maximize light and have had a few come out really well but lately...I just can't figure it out. Everything else lines up...the fact that I am not seeing light burn is what has thrown me off I feel. It's always the same type deficiency too, like a mix between nitrogen,calcium and phosphorus totally bizarre.
Definitely going to drop them down and observe to see if this fixes the issue.