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Calmag by Atami is a fertilizer that contains calcium and magnesium designed to be used in de-mineralized or osmosis water in order to avoid nutrient deficiencies.

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Calmag by Atami is designed to improve the quality of your irrigation water, enriching it with calcium and magnesium in order to improve plant growth and avoid calcium and magnesium deficiencies.

Both of these elements are incredibly important for your plants, and they’re in charge of things such as your plants structure and cell walls as well as light absorption. If you plants lack either of these elements when growing, they’ll slow down quite a lot which makes for shorter plants that are more vulnerable to stress and illnesses, as well as less yield.

You can apply this product moderately to your plants in order to avoid any sort of deficiency, although you’ll need to use it if you water your plants with de-mineralized or osmosis water, or any other kind of water low in calcium and magnesium.

Dosage and how to use Calmag by Atami:

  • Apply proportionately according to how mineralized the water is; use 1ml per liter in weak water and as little as 0.1ml per liter in more mineralized water.
  • Apply during the entire growing process.


Nitrogen 5.8
Magnesium 2.5
Calcium 6.8
Iron 0.03

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Calmag Reviews


Its a good product to have on your grow, you can supplement or you can correct deficiencies, either way it will work fine.


En mi caso este producto es indispensable


Estás en lo cierto, debes subir la ec en cada riego a 0.3-0.4 menos cuando comiences con el lavado de raíces.
Realiza un par de pruebas antes en un litro de agua, para evitar desaprovechar producto.
Un saludo


El agua que uso tiene EC 0, ¿cuanto calmag debo echar? ¿Hasta que llegue a EC 0.3? En todos los riegos supongo, gracias.


Me ha funcionado muy bien tambien en hidroponia

  • 1 out of 1 people found this review useful.

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