Deficiency or burn ?

Copper Deficency. She wants more Cal Mag looks like, not much, but a little more and that should be it. Easy fix.

To me it looks like the early stages of potassium deficiency. Apart from that, everything looks fine. Cheers, Organoman.

Hi mate, looking like the start of a magnesium deficiency. Plus your light my be a little too close. I would keep an eye on your PH as magnesium and calcium are usually what shows up first in a ph lockout. You can also see how the edges are curling up and the tips look a bit burnt. This says to me that your light is too close/intense. Raise her up a couple of inches and see how she does. If the leaves stop looking like a taco then you've sorted it. I hope this helps, good luck and happy growing