Athena Nutrients Cal Mag
Best nutrient supplement for hydroponic and soilless garden enthusiasts.
Elevate your plant's health with Athena Nutrients Cal Mag, a vital supplement designed for soilless growing systems. This gallon-sized solution delivers essential calcium and magnesium, nutrients often depleted in hydroponic and soilless environments. It actively supports robust cell structure, promoting overall plant vitality through every stage of growth. Trust Athena Nutrients to provide the quality care your plants need for optimal development and a thriving garden.
$35.10
Owner Satisfaction
4.7
/ 5
Category Rank
50
/ 4425
#50 in Fertilizers
Price vs Category Average
-43%
Below average
Fertilizer Source
Mineral Based
/ Mineral Based
Who it's for
- Commercial growers seeking to minimize irrigation line maintenance
- Coco coir gardeners needing fast-acting deficiency relief
- Athena program users wanting a simplified, balanced feeding schedule
Who should skip it
- Budget-conscious growers managing large-scale operations
- Gardeners using nutrient lines outside the Athena ecosystem
- Novice growers prone to over-application and nutrient lockout
Performance breakdown
Nutrient Bioavailability
Quick-release mineral formula ensures immediate uptake for stressed plants.
Hydroponic Compatibility
Specifically engineered to prevent nutrient lockout in soilless growing environments.
Structural Support
High calcium content significantly reinforces cell walls for sturdier stems.
Concentration Efficiency
Potent liquid concentrate offers excellent value for large-scale garden setups.
Ease of Mixing
Highly soluble liquid base integrates seamlessly into existing nutrient reservoirs.
Versatility
Effective across a wide range of flowering and vegetative plant species.
Key Specs
Fertilizer Source
Mineral Based
Target Plant Type
Vegetables, Flowers, Trees and Shrubs, Houseplants
Fertilizer Form
Liquid Concentrate
Release Type
Quick Release
Package Type
Gallon
SKU
LQ-CM-1G
Category
Nutrients/Supplements
Secondary Nutrients
Calcium and Magnesium
Features
- Provides essential calcium and magnesium
- Supports strong plant cell structure
- Ideal for soilless growing
- Enhances overall plant health
- Liquid concentrate formula
- Quick release nutrients
What customers say
Customers consistently praise Athena Cal Mag for its exceptional quality and reliability, noting significant improvements in plant vigor and health, particularly when addressing common deficiencies. Users appreciate how easily it integrates into various feeding programs, making nutrient management straightforward. While it sits at a premium price point, the consensus is that the predictable, professional grade results justify the investment, establishing it as a trusted staple for serious growers seeking consistent performance.
Know before you buy
While this formula is specifically optimized for soilless and hydroponic systems, it can be used in soil if your plants show signs of calcium or magnesium deficiency. However, it is primarily designed to address the nutrient depletion common in inert growing media.
This is a supplemental nutrient, not a complete fertilizer. It is intended to be used alongside your primary base nutrients to ensure your plants receive adequate levels of calcium and magnesium throughout their growth cycle.
As a liquid concentrate, it is highly soluble and mixes quickly into your reservoir or watering can. Always add your Cal Mag to the water first or separately from other concentrated nutrients to prevent potential nutrient lockout or precipitation.
Yes, like most mineral-based supplements, adding Cal Mag can influence the pH of your water. It is important to check and adjust your pH levels after mixing all your nutrients to ensure they remain within the optimal range for your specific plants.
You can use this supplement throughout the entire life cycle of the plant. It is particularly beneficial during periods of rapid growth and the transition into flowering, when plants have a higher demand for structural nutrients like calcium.
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$35