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10-30-20 Root Growth + Flower & Fruiting Development


Need a Boost of Flower Power? Our 1:3:2 major nutrient ratio has been trusted by Jack's Professional growers for over 70 years. This soluble and available nutrient combination stimulates blooming, resulting in heavy bud and fruit set.


Made in the USA. The same family that professional growers have trusted for over 73 years.


  • Heavy Metal Free. We test all of our ingredients upon arrival to ensure the highest quality in our formulas.
  • High Quality at Low Cost. By using our recommendations for mixing, you'll only spend 1 to 3 cents per gallon.
  • Efficient and Effective. Our powdered formulas