New grower

I ordered canna nitrogen mono 1l will that fix the deficiency

It is a def but it's caused by nute lockout from what you say what you have in mix. Where they oksy while giving GROW and when u added bloom u started seeing def?

Soil used is all mix/lean mix 50/50 ratio.

And if I were u, I'd make the base of your substrate deeper in the 2 black pots at the back, perfect sized pots and all but their only 1/3 filled, do this now as autos don't like transplants, and can lead to a stall in veg. Happy growing.

Well that's causes by the nutes you are giving. Possible mute lockout. Why are u giving bloom aaswel as grow in wk 3. Avoid bloom/sugar nutes. Focus on NPK+CAL MAG+micros for veg. Bloom nutes wk 5 wk 7 for fems. Happy growing good luck.