Is this Light Burn or Something Else

Hey everyone,

Just noticed this happening on one of my trees. It’s on the new growth so I’m a bit concerned. I suspect its light burn, can anyone confirm?

I’ve moved her and raised the lights slightly in the meantime.

Also see how the fan leaves are growing out at a bit if an angle (like circular instead of straight) if that makes sense. What causes that?

Hi, did not see this until now. It’s been five days since your post, after you raise the lights, how are they looking now?

This looks like too little potassium or calcium. What nutrient solution are you giving them?