Yellow Blotchy Leaves - Nitrogen Deficiency?

Hey guys,

I'm growing a wedding cake autoflower (RIGHT in picture) which has slowly been lightening green. I am noticing blotchy yellow in the lower leaves as well as yellowing on the top. Compared to her neighbor (LEFT) you can see the difference in the images on how bright green she is. Both plants are feeding from an automated water tank that runs 2 times a day for one minute. I am going to replace the feed because I noticed the ph moved up higher than i had originally thought it was at.

I am unsure what the deficiency could be or if this is nutrient lockout? Tips for how I should approach to fix the issue? Thank you for the help.

Below are my stats and some pics:


Grow Environment
Place: grow tent
Start date: 3/20/23
Temp: ~ 75 degrees
Humidity: 55%
Medium: 80% coco coir 20% perlite that's been buffered
Nutes Type: currently on general hydroponics maxigro bloom 5-15-14 at 50% strength
Water Source pH: 6.4ph (I had set it to 5.9 but it seems to have moved up)
PPM: 443
Other: I have two fans running in the tent, one to create air movement, the other to exhaust

May I suggest some new pics with your blurples temporarily turned off? That pinkish aura doesn't allow the human eye to see the real colours.

Thanks.

GH is always a bit weaker solution
I would increase to actual recommended dose which I rarely do
Also micronutrients as in the Flora series are a big help
Tbh I quit GH after trying Peters/Jacks

Thanks guys, sorry for the pictures, I added two more that I think show the issue more clearly. The leaves aren't in terrible shape, they just have these light blades of light green and I want to nip it in the bud. At the moment I only have GH so I'm going to stick to it, but I will increase the dose which should correct the ppm levels, was afraid to drown them in nutes.