Master A


SKU: hmh00074 Category:



HUMBOLDT NUTRIENTS MASTER A&B is a premium two-part amino acid-based fertilizer program designed for flowering plants. The amino acids and organic acid complexes set the Master A&B series apart from your standard base nutrient by making all the macro and micro nutrients more available.


Use 1:1 Ratio with Master A&B as a two-part Base Bloom Nutrient. Adjust PPM higher in later stages of the bloom cycle to desired strength. GUARANTEED ANALYSIS:

  • Total Nitrogen (N)………..4.90%
  • Soluble Potash (K20)……..3.80%
  • Calcium(Ca)………………..1.70%
  • Molybdenum(Mo)……..0.0008%

DERIVED FROM: Calcium Nitrate, Potassium Nitrate, Sodium Molybdate, Amino-Chelated Calcium and Sodium Borate, Amino-Chelated Iron, Amino-Chelated Zinc, Amino-Chelated Manganese, Amino-Chelated Boron, Amino Acid Complex and Organic Acid Complex.

Additional information

Dimensions 12 × 12 × 12 in


Humboldt Nutrients