This formula was designed as a base foundation for hydroponic growing. It can be manipulated in such a manner as to provide virtually any combination of nutrient levels desired, providing the highest availability to plants, due primarily to Jack’s has proven ability to remain in true solution over long periods of time. Should be used in combination with the 15-0-0 Calcium Nitrate in a two-part system.
Posted by Jeff W on Mar 1st 2019
This is Part A of two (or three) part hydroponic fertilizer. Use with part B plus Epsom salts with the Jack’s 3-2-1 formula for outstanding health, growth and vigor. Mix by weight, not volume in the following order: 3 parts “A”, 1 part Epsom salts and 2 parts “B” to create a complete nutrient solution. My plants are so healthy and happy AND I spend far less than than my friends on nutrients. Wonderful products!
All prices are in USD.