Hello. Please can you provide us some photos with natural lights? The "pink"(Blurple) spectrum don't allow us a more accurate "reading" of the problem that you are facing on your grow. The one that show us the top of the grow, where you can see the reddish/purple flower sketch, doesn't have no particular signs of damage/burnt/deficiency.
My analysis of your grow is that is a very thin grow. Is this a grow that starts as a clone? Why is so stretched? If it is a seedling scratch from zero, what happened? Why the grow looks like this? It is an short plant experiment? How many weeks does this growth have? Five?
On my behalf, this grow doesn't have no problem at all. The flower top has a normal texture and color, and the reddish "crown" is purely the strain pheno, so what's concerning you? Edges burnt?!? I don't see no burn edges at all...so keep the good work, and mainly try as much as posible to develop this cola the best you can and according to the visible carachters on your grow, no light stress or fed problems are noticeable.