Jack's® Nutrients FeED 12-4-16 RO Pure Water Fertilizer
Jack's® Nutrients FeED 12-4-16 RO Pure Water Fertilizer
Jack's® Nutrients FeED 12-4-16 RO Pure Water Fertilizer
Jack's® Nutrients FeED 12-4-16 RO Pure Water Fertilizer

Jack's® Nutrients FeED 12-4-16 RO Pure Water Fertilizer


$24.25 Regular price
  • In stock - departs in 2-3 business days

Jack's® Nutrients FeED 12-4-16 RO is a specially crafted one-part nutrient blend that caters to the needs of crops grown in very low alkalinity waters, such as reverse osmosis (RO) water, rainwater, and distilled water. This unique formula is designed for growers who prioritize purity and require a nutrient solution that is compatible with such water sources.

One of the key features of this formula is its ability to minimize pH crash. When using low alkalinity waters, maintaining a stable pH level can be challenging. However, this innovative formula is created using innovative raw materials that effectively mitigate pH fluctuations. This helps ensure that your plants receive a consistent and optimal pH environment, promoting healthy and vigorous growth.

Beyond its pH stabilizing properties, it is meticulously formulated to provide all the essential nutrients that plants require for robust growth. With a balanced composition featuring 12% nitrogen, 14% phosphorus, and 16% potassium, this nutrient blend supplies the necessary elements to support various plant functions, including root development, foliage growth, and overall plant vitality.

Benefits of Jack's® 12-4-16 RO Pure Water FeED:

  • Specially crafted for crops in low alkalinity waters.
  • Designed for growers who prioritize purity.
  • Minimizes pH crash and maintains stable pH for optimal growth.
  • Essential nutrients support root, foliage growth, and overall growth.

Physical and Chemical Properties:

Physical State: Solid
Appearance: Prills and Crystals
Color: Light Blue
Odor: Slightly yeasty
Solubility: Highly soluble in water
Relative Density: 55-75 lbs/ft3

Elemental Concentration

100 ppm N Solution Contains the Following Elements

Nitrate – N (NO₁) 99.7
Ammonium – N (NH) 3.1
Urea – N (Urea) 0.0
Phosphorus (P) 34.2
Potassium (K) 134.3
Calcium (Ca) 59.1
Magnesium (Mg) 17.0
Boron (B) 0.15
Copper (Cu) 0.16
Iron (Fe) 1.25
Manganese (Mn) 0.50
Molybdenum (Mo) 0.01
Zinc (Zn) 0.30

Guaranteed Analysis:

Total Nitrogen (N) 12.0%
3.0% Ammoniacal Nitrogen
4.0% Nitrate Nitrogen
Available Phosphate (P₂0) 4.0%
Soluble Potash (K₂0) 16.0%
Calcium (Ca) 7.0%
Magnesium (Mg) 2.0%
2.00% water soluble magnesium (Mg)
Boron (B) 0.02%
Copper (Cu) 0.050%
0.02% chelated copper (Cu)
Iron (Fe) 15%
0.15% chelated iron (Fe)
Manganese (Mn) 0.05%
0.05% chelated manganese (Mn)
Molybdenum (Mo) 0.001%
Zinc (Zn) 0.035%
0.035% chelated zinc (Zn)

Derived from: Calcium nitrate, potassium nitrate, magnesium nitrate, monopotassium phosphate, iron DTPA, iron EDTA, iron EDDHA, manganese EDTA, zinc EDTA, copper EDTA, boric acid, ammonium molybdate.
Potentially Basic: 338 lbs. of calcium
WARNING: This product contains Molybdenum (Mo) and may be harmful to ruminant animals foraging on crops where applications have been made.

Note: It's important to follow the manufacturer's instructions and guidelines for proper application and dosage based on the specific needs of your plants.

Additional Information

Safety Data Sheet (PDF)
Nutrient Decision Tree (PDF)
Nutrient Schedule for Pure & Simple (PDF)
Nutrient Schedule for City Limits (PDF)
Nutrient Schedule for Jack's 3-2-1 (PDF)
Nutrient Schedule for Outdoor Production (PDF)
Nutrient Schedule for Fruiting Crops (PDF)

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