Mad Farmer Cal+Mag
Best essential nutrient supplement for indoor gardeners seeking consistent plant health.
A reliable calcium and magnesium supplement that corrects common nutrient deficiencies in plants. It is an essential addition for growers using reverse osmosis water or coco coir, ensuring consistent mineral availability without adding unnecessary dyes to the nutrient solution.
$14.95
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Who it's for
- Gardeners seeking clean supplements without heavy metal contaminants
- Versatile growers using multiple cultivation methods and substrates
- Indoor cultivators managing fast-growing plants with high mineral demands
Who should skip it
- Commercial operators looking for the highest possible dilution ratios
- Precision growers requiring isolated mineral supplements without extra additives
- Hydroponic hobbyists using automated irrigation systems with fine emitters
Performance breakdown
Deficiency Prevention
Highly effective at stopping blossom end rot and common nutrient gaps.
Medium Compatibility
Seamlessly integrates into coco coir, soil, and hydroponic setups alike.
Formula Purity
Dye-free composition keeps your nutrient reservoirs clean and residue-free.
RO Water Optimization
Essential for buffering reverse osmosis water to prevent mineral lockouts.
Application Versatility
Works equally well as a root drench or a foliar spray.
Ease of Integration
Simple to add into any existing feeding schedule without complex calculations.
Key Specs
Ingredients
Calcium Nitrate, Magnesium Nitrate, Iron EDTA
Application Method
Foliar Spray, Root Drench
Form
Liquid
Water Soluble
Yes
Fertilizer Type
Supplement
Fertilizer Source
Mineral Based
Organic Certified
No
Plant Type Application
All-Purpose
Primary Benefit
Calcium supplement, Magnesium supplement, Prevent nutrient deficiency, Improve soil nutrient conditions
Season of Use
Spring, Summer, Fall
Know before you buy
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Ask Metto anything about the Mad Farmer Cal+Mag before you decide.
