Jack's Classic Reverse Osmosis Fertilizer
Best professional grade nutrient solution for gardeners using purified water sources.
Designed specifically for reverse osmosis and pure water systems, this formula ensures plants receive essential nutrients without the mineral buildup found in tap water. It provides a precise, balanced feed that promotes vigorous growth and health in continuous liquid feeding programs.
$30.70
at
Amazon
Who it's for
- Indoor gardeners using purified or extremely soft water sources
- Hobbyists seeking a clean, clog-free nutrient delivery system
- Growers wanting to prevent common deficiencies in inert growing media
Who should skip it
- Residents with high-alkalinity tap water or well water
- Casual plant owners who prefer pre-mixed liquid fertilizers
- Beginners looking for a simple set-it-and-forget-it feeding solution
Performance breakdown
RO Compatibility
Specifically engineered to balance nutrient deficiencies inherent in pure water systems.
Nutrient Precision
The 12-4-16 ratio offers exact control for consistent, vigorous plant development.
Solubility Speed
Fine powder dissolves rapidly without leaving residue in irrigation lines.
Feeding Efficiency
Concentrated formula simplifies continuous liquid feed programs for busy growers.
Micronutrient Completeness
Comprehensive profile eliminates the need for messy, additional supplement bottles.
Hydroponic Suitability
Clean, stable chemistry makes it a top-tier choice for hydroponic setups.
Key Specs
NPK Ratio
12-4-16
Package Weight
2.2 lbs
Form
Powder
Water Soluble
Yes
Intended Use
Reverse Osmosis and Pure Water Systems
Nutrient Profile
Includes added micronutrients
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