Is this nute burn or deficiency?

[Friendlytoad]

Week 5 of flower but the tips are shrinking up. And turning yellow and dying. I thought it was nute burn at first. I've been following the normal schedule of 5ml of micro and grow and 10ml of blood with GH trio. Should I up my bytes?

 

[TripsRabbit]

Looks hungry or thirsty.

 

[mysticepipedon]

That looks like a potassium deficiency. It mostly affects the lower leaves, the leaves in the bud are barely affected.