While I use
Promix BX, Chem Gro fert, water by hand, and is a bit different vs active Hydro. It is passive hydro.
I use a 4-20-39
15.5 0 0
Magnesium Sulfate/Epsom Salts
Momopotassium phosphate… Flowering only 0-52-34
Its a myth... going by tissue analysis that weed needs LESS Nitrogen in Flower. To the contrary, it needs more, all the way up to the end. If you don't over feed plants, theres no need for flushing, and Nitrogen is Not contained in the Flower, but IS contained in the leaves, and small cover leaves.
What is Nitrogen..
Humans eat Protein, and the body TURNS IT INTO NITROGEN.
All humans, and especially strength Athletes want to stay in Positive Nitrogen Balance, if you don't, you go Catabolic, and use yourself for energy. You want to stay Anabolic.. IE to Build Up.
Bud will be small if nitrogen restricted. Now you don't want to much, or it WILL delay flowering, but it IS needed in the proper amounts.
Catabolic = Tear Down.
But its like building muscles. You need Protein/Nitrogen
VEG Phase FLOWER Phase WK 1 WK 2 WK 3 WK 4 WK 1 WK 2 * WK 3 ++ WK 4 WK 5 ** WK 6 WK 7 WK 8 Per 100 gallons Grams Grams Grams Grams Grams Grams Grams Grams Grams Grams Grams Grams
Chem-Gro 4-20-39 100 100 200 200 200 200 300 300 400 400 400 400 Calcium Nitrate 100 100 200 200 200 200 300 300 400 400 400 400 Magnesium Sulfate 60 60 120 120 180 180 200 300 400 400 300 300 Mono-Potassium Phosphate 0 0 0 0 0 0 100 100 0 0 0 0
EC - ppm 400-500 650 650 1100 1200 1300 1500 1500 1800 1800 1700 1700 pH 6.4 6.4 6.3 6.2 6.2 6.2 6.1 6.0 6.0 6.0 6.0 6.0
* If you want to push the plants go up to 300 & 200 early ++ once you see flowers start to set. ** start this when you see very heavy flower set
In some varieties, extra Magnesium Sulfate and Iron chelate (FE138) may be beneficial
Weed also like 2x amount of Potassium vs Nitrogen.