I don't modify jack LOL. I start at 25% for seedlings>50% for veg and slowly move up to actual 3g/2g/1g for the first weeks of flower and then start backing off as they mature to finish. Haven't watched anything from GG for years but I thought I remember him claiming that you could run full strength 321 from the start of seedlings all the way to finish. Which is just shit advice; careful of what you find on youtube there is much bro' science and stoner logic there.
Yikes, he asked for what ppl use to success, why the attitude and arrogance. Youre acting like less nitrogen and more pk in flower compared to veg isnt a well known beneficial thing and how dare he adjust jacks to be optimal for marijuanna instead of tomatos. You dont have to adjust pk levels for flower, but its been proven over and over and over again that you will get heavier flowers and more of them if the pk ratio is higher.
What i use to success is jacks 3-2-1ratio in veg to a ppm of 750-900ish, depending on which strain i am running. My chemdawg cut usually needs even higher ppm than that in veg.
In flower i also use monopotassium phosphate (mkp) and my ratio is:
2gram/gal jacks, 2.2grams/gal of calcium nitrate (calnit), 2grams/gal magnesium sulfate (epsom salts) and 1.6grams/gal of MKP.
Heavier feeding strains get that at 800 ish ppm and the lighter feeding indicas diluted down more in the 650-700 range.
Thats what i found gives my favorite strains the best results after having done 10+ different runs with clones from the same moms.
No "bro science" here, actual PPM readings and how they perform on the actual scale. Have you *actually* ran full strength jacks on rooted clones in a DWC or RDWC system? Because thats what his advice was for, not seedlings, and it works fantastically.
Clones are not seedlings they are cuts from an established plant and thus behave differently when the roots themselves are in an aerated nutrient bath compared to an actual seedling.
Its funny how shitty advice can be when you dont follow the *actual* advice.
