Strange spindly lime green new growth... Zinc def??? Help please

Hey RIU how we doin' tonight?
SO I'm transitioning to flower after 5 wks vegging AK48. All was going well but today noticed new growth is spindly and lime green, also kinda skinny.
Nutes CNS17 Grow and bloom
E.C. 1.2
Hydro Grow in hydroton and rooting plugs
PH 6.0
Temp 75
So if anyone has some input I would love to hear it. Thanks guys and gals!

How long has it been since you switched out reservoir water? The older foliage almost looks too lush, as if high in N as well.

I thought that's how new growth always looks, lol. Well, the skinny leaves that is, not the lime green coloration.

I change the res every week. Is this a normal green and maybe I had too much N?

Thanks for the quick reply serapis!

Here is some info on too much Nitrogen
Nitrogen Toxicity
Leaves are often dark green and in the early stages abundant with foliage. If excess is severe, leaves will dry and begin to fall off. Root system will remain under developed or deteriorate after time. Fruit and flower set will be inhibited or deformed.

Here is some more info, hope it helps:

Root stunting is characteristic of calcium deficiency, acidity, aluminum toxicity, and copper toxicity. Some species may also show it when boron deficient. The shortened roots become thickened, the laterals become stubby, peg-like, and the whole system often discolours, brown or grey.
Symptoms localized at shoot growing points.
New shoots unopened; young leaves distorted; dead leaf tips; pale green plant copper deficiency
New shoots withered or dead; petiole or stem collapse; shoots stunted; green plant calcium deficiency
Young leaves pale green or yellow; rosetting or dead tip; dieback; dark green plant boron deficiency

Thanks for the N toxicity info! But what I'm worried about is the lime green new growth right now. I'm in flower so N is going to be diminished anyway. I'm still thinking zinc def but would like some more opinions

bump. anyone have any ideas..