Mixing the Jacks 321
The recipe for Jacks 321 is the following per 1 gallon of water:
3.6 grams Jacks Hydroponic 5-12-26
2.4 grams Jacks Calcium Nitrate 15-0-0
1.2 grams Magnesium Sulfate (Epsom salt)
To make it, mix Jacks Hydroponic first in the water til dissolved, then the Magnesium Sulfate until dissolved and then the Jacks Calcium Nitrate. Then ph as needed. Since I am using coco, looking for a ph of 5.8-6.0. I will use a ph of 6.0 to initially expand the coco and subsequent waterings will be at 5.8 ph.
I will make 2 gallons of nute mix to expand the coco brick and have some extra for watering the coco.