I was still seing signs of of Nitrogen Deficiency [https://www.growweedeasy.com/wp-content/uploads/2010/10/nitrogen-deficiency-yellow-leaf-sm.jpg].
So I increased the amount of Big Plant Science: Part A.
I have read that red / purple stems could be a sign of Potassium Deficiency, and since I was going a bit light on Big Plant Science: Bud Explosion, I have now increased the amount in this weeks watering.
The lower leaves now appear to lose color between vains instead of the leaves yellowing entirely from the start. This could be a sign of Magnessium Deficiency, and I have just been out to buy Big Plant Science: Aroma Boost, which contains Magnessium. Going to start adding it to the water from next week.
Example 1-2: Light green / yellow growth, on top colas on branches hidden from direct light. I am mostly just going to ignore this, and use popcorn buds to try my hands on making Ice bubble Hash.