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  • Description
  • Product Features
  • Specifications
  • Application Rates

MasterBlend 0-20-42 Bloom Formula is a 100% water-soluble, high-purity NPK fertilizer formulated for bloom stage feeding in hydroponic and continuous drip systems. Zero fallout, zero clogging.

Key Specifications

  • NPK: 0-20-42
  • Form: 100% water-soluble powder
  • Package: 4 lb. container
  • Purity: High-purity, clog-free

Applications

  • Hydroponics — Fully soluble; suitable for all recirculating and drain-to-waste systems
  • Drip & Continuous Feed — Ideal for continuous liquid feed programs
  • Bloom Stage — High P and K ratios support flowering and fruit development

An Improved Bloom Formula

MasterBlend 0-20-42 delivers significantly higher P and K ratios than 0-12-24 bloom formulas, offering improved nutrient density for bloom-stage programs. Growers looking to maximize flowering performance will find 0-20-42 a meaningful upgrade.

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  • Easy to use: Use with any calcium nitrate to make a complete plant nutrient solution.
  • High Analysis: 0-20-42 water soluble fertilizer complete with all essential micronutrients.
  • Pure: Manufactured from the highest quality technical grade materials, MasterBlend water-soluble fertilizers for greenhouse and controlled environment agriculture provide the highest level of balanced nutrition available for flowering cannabis and hemp grown in a soil medium or hydroponic system.
  • Water Soluble: High solubility, ideal for making concentrated stock solutions for automatic fertilizer injection systems.

Guaranteed Analysis:

 Total Nitrogen (N) 0%
 Available Phosphate (P2O5) 20%
 Soluble Potash (K2O) 42%
 Magnesium (Mg) (Total) 0.0%
 0% Water Soluble Magnesium (Mg)
Sulfur (S)9%
 Boron (B)  0.03%
 Copper (Cu) 0.02%
 0.01% Chelated Copper (Cu)
 Iron (Fe) 0.35%
 0.20% Chelated Iron (Fe)
 Manganese (Mn) 0.09%
 0.05% Chelated Manganese (Mn)
 Molybdenum (Mo) 0.01%
 Zinc (Zn) 0.02%
 0.01% Chelated Zinc (Zn)

    Plant nutrients derived from:

    potassium phosphate, potassium sulfate, boric acid, copper EDTA, copper sulfate, iron DTPA, manganese EDTA, sodium molybdate, zinc EDTA

    Potential Basicity:

    Lbs. calcium carbonate equivalent per ton.

    Maximum Solubility:

     Lbs. per gallon

    CAUTION: Some crops may be injured by application of Boron.

    This fertilizer is to be used only on soils that respond to Molybdenum. Crops high in Molybdenum are toxic to ruminant animals.

    Mixing rates:

    FLOWERING plants: Mix 10.7 oz. of Master Blend 0-20-42 in 100 gallons of water, along with 14.1 oz. of calcium nitrate and 8.3 ounces of magnesium sulfate(epsom salt). For small volumes use 3-grams of Mater Blend 0-20-42- and 4-grams of calcium nitrate and 2.3-grams magnesium sulfate per gallon of final volume working solution. This will give a nutrient profile of approximately:

    164ppm N - 69ppm P - 276ppm K - 60ppm Mg - 201ppm Ca - 150ppm S

    2.8ppm Fe - 0.159ppm Zn - 0.238ppm B - 0.159ppm Cu - 0.079ppm Mo - 0.7ppm Mn


    With an estimated EC of 2.2 mS/cm.

    MasterBlend 0-20-42 Bloom Formula 4 lb.

    MasterBlend 0-20-42 Bloom Formula 4 lb.

    Your price: Sold out:
    Regular price $20.98
    Regular price $25.18 Sale price $20.98
    Unit price $5.25  per  lb
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