Jacks Nutrients 15-5-20 Tap Water is formulated with careful consideration of cannabis growers’ requirements, offering a reliable solution to overcome water-related challenges. Whether you are using tap water, city water, or well water with higher alkalinity and pH, this formula provides the necessary nutrients and pH adjustment to support vigorous growth and maximize yield. This specialized blend also proves effective for greenhouse crops that must contend with challenging water conditions.

The formula of 15-5-20 offers a targeted solution to address the specific needs of these water sources. This formula features a well-balanced combination of soluble calcium, magnesium, and a precise mix of micronutrients which ensures that your plants receive all the essential elements necessary for optimal development. Unlock the full potential of your cannabis or greenhouse crops with the nutrients they need to thrive, grow, and produce more abundant harvests.

Benefits of Jack’s 15-2-50 Tap Water FeED

• Contains extra soluble calcium, magnesium, and balanced micronutrients.
• Suitable for tap, city, or well water with slightly higher alkalinity and pH.
• Specifically formulated for cannabis growers facing water-related challenges.
• Promotes healthy plant growth and gradually lowers pH levels.
• Provides essential nutrients for optimal plant development.

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

Physical and Chemical Properties:

Physical State: Solid
Appearance: 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 (NO) 79.57
Ammonium (NH) 20.09
Urea (Urea) 0.0
Phosphorus (P) 38.56
Potassium (K) 114.08
Calcium (Ca) 26.01
Magnesium (Mg) 11.91
Boron (B) 0.15
Copper (Cu) 0.15
Iron (Fe) 1.5
Manganese (Mn) 0.35
Molybdenum (Mo) 0.01
Zinc (Zn) 0.35

Guaranteed Analysis:

Total Nitrogen (N) 12.0%
3.0% Ammoniacal Nitrogen
4.0% Nitrate Nitrogen
Available Phosphate (P0) 4.0%
Soluble Potash (K0) 16.0%
Calcium (Ca) 7.0%
Magnesium (Mg) 2.0%
2.00% Water Soluble Magnesium (Mg)
Boron (B) 0.02%
Copper (Cu) 0.05%
0.02% Chelated Copper (Cu)
Iron (Fe) 0.15%
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: Ammonium nitrate, 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: 75 lbs. of calcium carbonate equivalent (CCE) per ton.
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)