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4lb Kit Jacks 321 Hydroponic Fertilizer Nutrient Plant Food Grow Bloom General
4lb Kit Jacks 321 Hydroponic Fertilizer Nutrient Plant Food Grow Bloom General
4lb Kit Jacks 321 Hydroponic Fertilizer Nutrient Plant Food Grow Bloom General
4lb Kit Jacks 321 Hydroponic Fertilizer Nutrient Plant Food Grow Bloom General

4lb Kit Jacks 321 Hydroponic Fertilizer Nutrient Plant Food Grow Bloom General

$ 15.28

Availability: 1483 in stock
  • Restocking Fee: No
  • MPN: Jack's
  • Condition: Premium quality ingredients are carefully repackaged from bulk to make approx 300 gallons of nutritionally complete Ph buffered hydroponic feed solution.
  • Country/Region of Manufacture: United States
  • Return shipping will be paid by: Seller
  • Modified Item: No
  • Custom Bundle: Yes
  • Non-Domestic Product: No
  • All returns accepted: Returns Accepted
  • Item must be returned within: 30 Days
  • Type: Nutrient Package
  • Brand: JR Peters Jack's
  • Bundle Description: Kit contains 2lb of Jacks 5-12-26, 1.3lb of Jacks 15.5-0-0, and 0.7lb of Epsom Salt
  • Refund will be given as: Money back or replacement (buyer's choice)

    Description

    Features and Benefits
    :
    -
    Best value
    premium quality kit ingredients, proven performance, yields on par with top-of-the-line liquid "nutes" that cost 20 times as much per dose
    -
    Easy to use
    simple intuitive mixing and designed to be
    used
    from seedling all the way through flowering/fruiting
    -
    Microprilled Jacks 15.5-0-0
    allows fast dissolution and accurate volumetric measuring with a spoon (no electronic scale needed)
    -
    Convenient
    leg work saving kit features premium quality ingredients from JR Peters and Giles
    -
    Proven
    over decades as the "gold standard" for high performance repeatable reliable hydroponic production at any scale
    -
    Concentrated
    and compact with fractions of a teaspoon per gallon dosing means a little goes a long long way
    -
    Complete
    nutrition (including all essential macro and micro-nutrients) with pH buffering
    -Versatile
    can also be used as a "normal" fertilizer for plants growing in soil
    -
    Well documented
    performance
    in industrial agriculture literature as well as on YouTube and other social m
    edia/
    blog platforms
    One of the "guru" pioneers of COB (chip on board) LED lighting applied to indoor growing kindly authored a comprehensive technical appraisal video of Jacks 321, what it is, how it works, why it works so well etc
    https://www.youtube.com/watch?v=KUoTFGXfb60
    Kit Includes
    :
    2 pounds of Jacks Hydroponics 5-12-26
    1.3 pounds of microprilled Jacks Calcium Nitrate 15.5-0-0
    0.7 pounds of technical grade Giles OMRI Magnesium Sulfate (Epsom)
    Mixing Instrucions
    :
    Mixing instructions per gallon of water below are in the order they should be mixed (dissolve each one completely before adding next).  Warm water helps speed up dissolution.
    By weight (add to one gallon of water):
    1) Weigh and completely dissolve 3 grams Jacks 5-12-26
    2) Weigh and
    completely
    dissolve 1 grams Magnesium Sulfate
    3) Weigh and
    completely
    dissolve
    2 grams Jacks Calcium Nitrate 15.5-0-0
    By volume (add to one gallon of water):
    1) Measure and
    completely
    dissolve 1/2 teaspoon Jacks 5-12-26
    2)
    Measure
    and
    completely
    dissolve 1/4 teaspoon Magnesium Sulfate
    3)
    Measure
    and
    completely
    dissolve
    1/2 teaspoon Jacks Calcium Nitrate 15.5-0-0
    Other kit sizes available.