Whats some numbers on your res? Like whats the PH, res temps, ppm?
2 pages and none of this has been brought up once?
I agree with CannaOG that you should cut out some of the bottles and just use a basic all in one nutrient line until you understand what you are feeding them and why. Maybe get a bloom enhancer you add in the last few weeks of flower. Other than that if you are keeping your res temps/ppm/ph in check, along with good environment -your plants will produce well.
If I had to "shoot from the hip" with what I believe is wrong without any basic info on the plants, Id guess your ph is less than optimal causing a nutrient lockout. They look hungry to me like they are going to turn yellow soon.