Plant is budding but Leaves are yellowing and tips are yellowing

[Dawghouse]

My plant is in its last month and it is budding but the tips of the leaves are turning brown and over time turn yellow and brown. I have a pic below of what the leave looks like when it starts turning. as well some of the upper leaves are curling upward. Any advice would be great thanks.[attachment=o286112]

[sworth...]

Got any more pics? The yellowing fan leaf could be nute deficiency, but with curling tops I'm thinking cal/mag...
Some pics of the whole plant would be a help

[Bloomin Idiot]

The leaves are curling up because they are praying for nutes, feed them!

[Dawghouse]

The leaves are curling up because they are praying for nutes, feed them!

Thanks guys, I have been feeding it but I am not sure what deficiency she is suffering from which is why I am on here. Here are a couple more pics hopefully it helps. Thanks guys. Its my first time growing.[attachment=o286115][attachment=o286116]

[THC IS FOR ME]

a im new on this and i dont know how to post stuff on this web site please help

[sworth...]

Magnesium deficiency imo. Get some Cal/Mag solution from your grow shop.
Have you tried just giving her a flush/rest/feed?

[Bloomin Idiot]

what are you feeding it? What is the ph of the medium and the water.

Could be ca/mg but I doubt it. Looks like the ph is out of range. Also its time to boost the P-K.

Check the schedule for the nutes you are using.