FoxFarm Grow Big Hydroponic Fertilizer 3-2-6, 16oz Container


Based on our popular Grow Big® Liquid Plant Food, Grow Big® Hydroponic Liquid Plant Food is a liquid concentrate fertilizer specifically designed for hydroponic use.

Grow Big® Hydroponic contains earthworm castings and essential micronutrients to support vigorous vegetative growth. Our special brew is designed to enhance plant size and structure, allowing for more abundant fruit, flower and bud development.

Hydro tip: When plants show their first sign of flowering, usually around week 5, switch to Tiger Bloom® and Big Bloom®. For best results, refer to the FoxFarm Feeding Schedule.

👇 Click description tab for instructions on how to use.

How to use:

  • Use a conductivity or ppm meter to monitor water quality and control nutrient strength.
  • Maintain nutrient solution pH levels between 5.8 and 6.3.
  • Check pH regularly as water quality can vary.
  • Measure accurately, always adjust fertilization rates to plant response.
  • General Feeding: 2 teaspoons (10 mL) per gallon (4 L) of water with every reservoir change.
  • Heavy Feeding: 3 teaspoons (15 mL) per gallon (4 L) of water with every reservoir change.
  • Supplemental Foliar Feeding: 1/2 teaspoon (2.5 mL) per gallon (4 L) of water every other week. Do not apply while plants are in direct light.

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