Leaves are yellow and dying, nutrients or ph?

[taquarinha420]

Sup, I'm from Brazil, starting to grow.
I took some photos to see if u know how to help me.
I don't know if it's a nutrient deficiency or ph

 

[Muddy]

Welcome to AFN. They could also just be finishing up. To help, we'll need more details. What kind of soil, what nutrients and how often, pH of feeds and of run off, age of the plant? Try and give us as much detail about your grow as you can.