Build the foundation of a high-performance feeding program with Jack's Nutrients 5-12-26 Part A. This professional-grade, fully water-soluble fertilizer is trusted by commercial growers, greenhouse operators, and advanced home gardeners for delivering precise nutrition in hydroponic systems, fertigation programs, and continuous liquid feeding applications.
Designed as the cornerstone of Jack's renowned two-part nutrient system, 5-12-26 Part A provides essential primary nutrients and a complete micronutrient package that supports vigorous plant growth, healthy root development, and exceptional crop performance. When paired with Jack's 15-0-0 Calcium Nitrate Part B, growers gain complete control over plant nutrition while maintaining maximum nutrient availability.
Why Growers Choose Jack's 5-12-26 Part A
- Professional-grade hydroponic base fertilizer
- Designed for use in two-part nutrient programs
- Supports vigorous root growth and healthy plant development
- Provides essential phosphorus and potassium for strong plant performance
- Contains a complete package of micronutrients
- Fully water-soluble with no residue or sediment
- Helps prevent clogged irrigation lines, emitters, and drippers
- Trusted by commercial greenhouses and hobby growers worldwide
- Ideal for hydroponics, coco coir, soilless media, and fertigation systems
The Foundation of the Jack's Nutrient System
Jack's 5-12-26 serves as the primary nutrient base in one of the most widely used hydroponic feeding programs available today. The formula is specifically designed to work alongside calcium nitrate and magnesium sulfate, allowing growers to create a complete and balanced nutrient solution while maintaining optimal nutrient availability.
This flexible approach provides excellent control over nutrient ratios while helping plants achieve vigorous growth throughout every stage of development.
Complete Plant Nutrition
Nitrogen (5%)
Supports healthy vegetative growth while allowing flexibility when combined with supplemental calcium nitrate.
Phosphate (12%)
Encourages strong root development, energy production, and overall plant health.
Potash (26%)
Promotes plant vigor, nutrient movement, stress tolerance, flower development, and crop quality.
Essential Micronutrients
Jack's 5-12-26 includes a complete micronutrient package that supports:
- Chlorophyll production
- Healthy leaf development
- Efficient nutrient uptake
- Root growth
- Photosynthesis
- Overall plant vitality
Ideal for Hydroponic Growing Systems
The clean, highly soluble formula makes Jack's 5-12-26 an excellent choice for:
- Deep Water Culture (DWC)
- Recirculating Hydroponic Systems
- Drip Irrigation Systems
- Fertigation Programs
- Coco Coir Growing
- Rockwool Systems
- Greenhouse Production
- Commercial Cultivation
- Soilless Growing Media
Because the formula dissolves completely in water, growers can confidently use it in automated feeding systems without worrying about sediment buildup or clogged equipment.
Clean, Residue-Free Solubility
One of the biggest advantages of Jack's Nutrients 5-12-26 is its exceptional solubility. The fertilizer dissolves rapidly and completely, helping maintain clean reservoirs, irrigation lines, emitters, and injectors.
This makes it especially valuable for commercial operations and growers running automated irrigation systems where reliability is critical.
Common Feeding Programs
Many growers use Jack's 5-12-26 as part of the popular Jack's 3-2-1 feeding method, pairing it with:
- Jack's 15-0-0 Calcium Nitrate Part B
- Magnesium Sulfate (Epsom Salt)
Together, these components create a complete nutrient solution capable of supporting vigorous growth, healthy roots, and outstanding crop performance throughout the growing cycle.
Ideal For
- Hydroponic Systems
- Coco Coir Cultivation
- Greenhouse Production
- Commercial Growing Operations
- Indoor Gardens
- Automated Irrigation Systems
- Fertigation Programs
- Container Growing
- Soilless Media
- High-Yield Crop Production
Why Professional Growers Trust Jack's Nutrients
For decades, growers have relied on Jack's Nutrients for consistent quality, precise formulations, and dependable results. The 5-12-26 Part A formula continues that tradition by providing the nutrient foundation needed to maximize plant health, growth rates, and overall crop performance.
Pro Growing Tip
For best results, use Jack's 5-12-26 Part A in combination with Jack's 15-0-0 Calcium Nitrate Part B and magnesium sulfate as part of a complete feeding program. Always dissolve each component separately in water before mixing to ensure maximum nutrient availability and prevent precipitation.
