Need some help!

"Tentatively, I'd recommend epsom salts, some calcium, phosphorus, sugars/carbs. " I say that, based on the way the plant looks and its maturity. I mean, if you already have lots of that, obviously disregard.

Looks to me like some kind of ph/nute imbalance (perhaps the plant is just feeding a lot). Tentatively, I'd recommend epsom salts, some calcium, phosphorus, sugars/carbs.

Burnt tips can be an indicator of alot of things the thin leaf blades will be down to her sativa genetics so dont worry about that its just the pheno. Usually burnt tips indicate a over or under feed. Now a drastic overfeed will cause worse symptoms and the leaves will burn from the edges inwards. I would say in my opinion it is an overfeed like brave has said. I would do a flush and see how you go. this could be the starting signs of a toxcity also. finally it could be a high ph. that is well known to cause leaves to fade to yellow. They are all my guesses haha wish you the best of luck for the finish :)

Hi mate, probably just a touch of nute burn. Just give her fresh water for the next couple of waterings and she will bounce back. I hope this helps and happy growing...