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Athena Blended CaMg - Cal Mag for Plants | Calcium, Magnesium, Iron & Nitrogen Supplement for Plants | Calmag Fertilizer | 2-0-0 | 1 Gallon

  • Based on 87 reviews
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Availability: In Stock.
Fulfilled by Athena Ag Inc

Arrives Wednesday, May 20
Order within 14 hours and 36 minutes
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Size: 1 Gallon


Features

  • Supports Heavy Plant Growth & Development Athena nutrients provides essential calcium, magnesium, iron and nitrogen to strengthen stems, leaves, and overall plant structure during demanding growth phases.
  • Corrects Ca/Mg/Fe Deficiencies Plant calcium fertilizer can effectively restores nutrient balance to prevent common deficiencies that can weaken plants, stunt growth, or reduce yields.
  • Perfect for Hydroponics & RO Water Systems Calmag fertilizer was formulated for hydroponic nutrient solutions, reverse osmosis water setups, and plants in inert media like coco and rockwool.
  • Enhances Buds, Blooms & Flowers Cal-Mag growing fertilizer works as a supportive bud booster and bloom nutrient to encourage fuller blossoms, increased flower density, and higher yields.
  • Stronger Fruits & Vegetables Ideal as a tomato calcium supplement or fertilizer for outdoor plants like peppers, herbs, and vegetables for healthier, more abundant harvests.
  • Flower & Rose Fertilizer Liquid Can be used as a blossom fertilizer or liquid fertilizer for roses, enhancing flower color, fragrance, and overall garden performance.
  • Balances Overall Nutrient Uptake Unlike heavy calcium magnesium potassium supplements, Athena CaMg maintains proper elemental balance for optimal absorption and plant vitality.
  • Versatile Indoor & Outdoor Use Works across growing environments as organic hydroponics nutrients, indoor plant liquid fertilizer, or outdoor flower food.
  • Micronutrient-Rich Formula Supplies key micronutrients for plants including iron, improving chlorophyll production, photosynthesis, and plant energy efficiency.
  • Fertigation & Irrigation Compatible Clean, soluble formula integrates smoothly into liquid fertilizer irrigation systems without causing clogging or buildup.

Brand: Athena


Item Form: Liquid


Liquid Volume: 1 Gallons


Specific Uses For Product: Hydroponic Systems, Indoor Growing Environments


Manufacturer: Athena Ag Inc.


Product Dimensions ‏ : ‎ 11 x 4.5 x 7 inches; 11.7 Pounds


Item model number ‏ : ‎ LQ-CM-1G


Date First Available ‏ : ‎ December 17, 2021


Manufacturer ‏ : ‎ Athena Ag Inc.


Best Sellers Rank: #23,401 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #14 in Hydroponic Nutrients & Additives


#14 in Hydroponic Nutrients & Additives:


Customer Reviews: 4.7 4.7 out of 5 stars (94)


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, May 20

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Best calmg
Size: 1 Gallon
Best in the game period
Reviewed in the United States on October 21, 2025 by DM!

  • The best
Size: 1 Gallon
It works great
Reviewed in the United States on October 22, 2025 by Henry Edwards

  • Top shelf nutrients.
Size: 1 Gallon
Easy to balance PH.
Reviewed in the United States on October 14, 2025 by Got2golf

  • Love it
Size: 5 Gallon
Great product and easy to use with the other Athena nutrients
Reviewed in the United States on July 19, 2025 by WILLIAM AULIK

  • Good Stuff
Size: 1 Gallon
Goes with their other products and I have great results from using it.
Reviewed in the United States on May 8, 2025 by Kuwlpapa

  • Only company I trust. All others rip growers off bad!
Size: 1 Gallon
Only line I'll trust. 💯 All around quality and customer service. Speaks for it self
Reviewed in the United States on February 24, 2025 by Joe gartley

  • Great supplement
Size: 1 Gallon
For the price point this is great cal mag
Reviewed in the United States on January 26, 2025 by Adam Flood

  • Grade A
Size: 1 Gallon
Grade a stuff to be honest
Reviewed in the United States on February 15, 2025 by Michael Reynolds

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