Grow Mediums Early nitrogen def?

[Uğur]

Hey there..this is my first post ever and i ll be happy with any help. Temps are stable at 75-80 same as hum(%45-55) using autopots and first 10 days was only hand water..not all the pot but around the seddling..now i maybe used too much light at first.. not sure if it is the issue. 4x8 tent trying to manage 2x1000 right now they re dimmed to %75. These girls on the pictures looks stunned to me.
Btw they are from mep genetics, northern cheese haze

I use:
(Started with 0.5 right now 0.9)
Biobizz coco
Advanced nute trio
Supervit
Voodoo juice
Mineral magic

Thanks for any help! Peace

 

[Uğur]

15 days old atm

 

[AutoWonders]

Looks more like a magnesium deficiency to me. Nitrogen, though it can appear early and often, is more light yellowish to the green. Download a couple of the deficiency charts online, then you can refer to those first. I am in coco and give calmag to nearly every feeding.

 

[Arthur]

I vote magnesium as well