Yellowing and curling leafs

First grow for me, a week or so into flower.

Any ideas?

We need to know some info... What and how much are you feeding for one.

Hmmm.

After reviewing your case, I would say your plants are are showing inter-veinal chlorosis along the margins and acute necrosis of the tips.

Hope that helps.

Nute lock out..check your ph

Google Phosphorus deficient cannabis. I am dealing with similar and various deficiencies or lock out. A buddy recently asked if I've been shaking my general hyde nutes, before using them.....
Oh ffs....Could it be that easy? I've grown 2+lb per thousand a couple years back, yet just over a pound with 3(!) thousand watts this last grow. Ive never remembered to shake them this round.

Like Ringsixty said check the PH first, might help your <ahem> LEAVES.