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Calcium and magnesium tend to go bad when they come into contact with other nutrients, which is why they are not usually present in large amounts in fertilizers.

Calmag by Atami provides the calcium and magnesium that cannabis plants need for proper development.

To be used as an additive or to reconstitute reverse osmosis water.


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ATA Calmag by Atami is an indispensable product for growing in coco coir substrate.

Type and use

Calmag is a calcium and magnesium additive to be used in all types of substrates as an additive or to reconstitute reverse osmosis water.

Plant benefits

  • Covers the doses of calcium and magnesium that base fertilizers can't incorporate.
  • Using Calmag alongside the rest of Atami's nutrients and micronutrients results in vigorous and rapid growth.
  • Calcium provides stability to the cell wall and stimulates cell elongation. It also helps the plant withstand heat stress.
  • Magnesium is the central part of the chlorophyll molecule, it activates numerous enzymes and contributes to achieving a greater yield.


NPK 6-0-0

Nitrogen 6 Calcium 20 Magnesium 12

Usage and dosage

In case of deficiencies, mix 0.1 – 1 ml of Calmag for every liter of water.

La Huerta's Opinion

ATA Calmag is an additive. For best results, use it along with a basic growth or flowering fertilizer.

Data sheet

Type of composition
Mineral or chemical
Growth stage
Type of stimulant or additive
Nutrtional complement
Type of grow
Aeroponic grow
Coco grow
Hydroponic grow
Soil grow

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