i'm no expert bro but i agree with Greenthing, that first set of pics just looked
a bit hungry.

now it looks like nute burn as syde00 suggested.

unfortunately, i'm not experienced enough to give you a definitive answer.

so i'd suggest you fill out the troubleshooting form located in Greenthing's sig.

then, hopefully, Rusty or Stinky or Stitch or one of the other more experienced
growers will be able to more definitively answer your question.