Natural Hydroponics 501MICRO Nutrient Concentrate Fertilizer for Rapid Growth (1 Pint)

501MICRO provides the specialized nutrients plants need for rapid growth. With the highest quality primary ingredients, and a rich combination of chelated micronutrients and trace elements, 501MICRO is ideal for hydroponic applications as well as soil and coco coir.

  • Specialized Nutrients for Rapidly Growing Plants
  • NPK 5-0-1: 5% Nitrogen, 0% Phosphorus, 1% Potassium
  • Quality Primary Ingredients & No Artificial Colors
  • Use with 216GROW & 054BLOOM for Custom Mixes
  • Ideal for Hydroponic Applications, Soil & Coir
  • $9.99
  • $15.00

Specialized Nutrients for Rapid Growth: Natural Hydroponics 501MICRO provides the specialized nutrients, and chelated micronutrients, plants need for a boost during rapid, vigorous growth.

NPK 5-0-1 - With a Guaranteed Analysis of 5% Nitrogen (N), 0% Phosphorus (P), 1% Potassium (K), 501MICRO is derived from highly purified ingredients and chelated micronutrients (including Calcium, Boron, Cobalt, Copper, Iron, Manganese, Molybdenum, and Zinc) concentrated to the limit of solubility, to ensure consistent availability in all environments and mediums.

Quality Primary Ingredients & No Artificial Colors! 501MICRO is ideal for hydroponic applications as well soil, coco coir, and other growing media.

Natural Hydroponics Professional Nutrient System: 501MICRO is part of the Professional Nutrient System of liquid fertilizer concentrates targeting each phase of a plants life cycle: seedling, vegetative, flowering, fruiting, and transitions between phases as well. Using the Professional Nutrient System, growers can mix aggressive nutrient formulas for fast growing plants with high metabolic rates; and mild formulas for delicate or slow growing plants.

GROWTH STAGE Teaspoons Per Gallon Milliliters Per 100 Liters
Cuttings & Seedlings 1/4 1/4 1/4 32 32 32
General - Mild Vegetative 1 1 1 130 130 130
Aggressive Vegetative Growth 3 2 1 390 260 130
Transition to Bloom 2 2 2 260 260 260
Blooming & Ripening 1 2 3 130 260 390
Chart values are intended to be used without supplements. Use as a guide only.

The Professional Nutrient System of Liquid Nutrient Concentrates is Scientifically Formulated for Vigorous Growth & Professional Quality Harvests.

  • Shake well before using and measure accurately.
  • Reduce nutrient strength in very bright, hot or dry environments, or if plants show signs of stress.
  • Add 501MICRO to fresh water and mix well before adding 216GROW or 054BLOOM. Never combine 501MICRO with other products in undiluted form as doing so may cause nutrient lockout.
  • Monitor water quality and control nutrient strength.
  • Replace nutrients every 1-2 weeks to prevent imbalance.
  • Maintain nutrient pH between 5.5-6.5 in most environments. Adjustments may be required as water quality and pH may vary depending on seasons, growing region or environment.
  • Protect from freezing and store out of direct sunlight. This product is concentrated to the limit of solubility. If crystallization occurs, remix the entire bottle contents with an equal amount of hot water; and double the amount used in application formulas.
  • Use as part of a complete fertilizer program.

501MICRO Nutrient Concentrate

Weight 1.15 Pounds (522 Grams)
Volume 1 Pint (473 Milliliters)
Form Liquid Concentrate
NPK 5-0-1 (5% Nitrogen, 0% Phosphorus, 1% Potassium). Also contains 5.0% Calcium, 0.02% Boron, 0.0005% Cobalt, 0.05% Copper, 0.1% Iron, 0.05% Manganese, 0.0008% Molybdenum, and 0.05% Zinc.
Derived From Ammonium Molybdate, Ammonium Nitrate, Calcium Carbonate, Calcium Nitrate, Cobalt EDTA, Copper EAHP, Iron EDTA, Manganese EAHP, Potassium Borate, Zinc EDTA
Country of Origin This Product is Proudly Made in the USA
Product Label

501Micro Liquid Nutrient Concentrate Product Label PDF

Packaging Light Resistant Plastic Bottle with Foil Safety Seal