Speaking strictly for coco.
I agree I like the schedule a lot. Although I'm not as abrupt as Canna recommends. As far as only adding pK13/14 for week three I agree with because I supplement with Aqua Flores B(?) throughout weeks 4, 5 and 6m which is a 0-4-4 and adds some Mo. I like to keep my plants looking as healthy as possible up until I flush. I recently bought a digital refractometer and will be seriously testing my brix levels of my buds and oils.
As far as lowering CO2. I haven't had the ability accurately do so at my home operation. My meter is very basic and is set to keep the PPM between 1300-1500 during the lights on. Not much I can do about it but I don't really suspect it is lowers quality as it has been stated by others. My Full Spectrum tested herb had CO2 up until the end and all came out stellar. Maybe it would have been better without it but that is pure conjecture and unlikely I think.
It's hard to tell someone to change methods, including lowering your fertilizer concentrations if you're not experiencing problems. If you're having solid yields, you're happy with your product and you are staying profitable/sustainable. In my experience building up the fertilizers throughout the entire process I have not had the best growth or yields. I do like the saying "less is more."
