Canna Calmag Agent 1 Liter

Regular Price $17.11

Working with varying types of water, CANNA CALMAG is a balanced water conditioner and treatment. CANNA CALMAG AGENT is a calcium and magnesium mineral nutrient designed to improve water quality for calcium sensitive systems, specifically when using reverse osmosis water with a coco medium. Our CANNA CALMAG AGENT increases water hardness, without disrupting the balance of nutrient ratios within the system, and preserves nutrient quality while in the nutrient reservoir.


  • Prevents deficiencies in calcium and magnesium
  • Increases water hardness
  • Stabilizes water pH over time
  • Perfected for use on our CANNA COCO substrate
  • Maintains optimal nutrient quality in the nutrient reservoir
  • Stronger, healthier plants
  • Promotes better quality flowers

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SKU: 17817 Category:


Canna Calmag Agent 1L

  1. Fill nutrient reservoir with water of room temperature (64-72 °F).
  2. Add nutrients and additives to be used such as CANNA COCO, CANNABOOST, RHIZOTONIC, CANNAZYM, and PK13/14, mixing between each addition. Adjust your EC as needed. Make pH adjustments as needed.
  3. Add 2 – 4 ml/gal (5 – 10 ml/10 liters) of CALMAG AGENT, depending on your water quality and target plant.
  4. Wait 24-48 hours to do additional pH adjustments, because the solution naturally drops and then rises in pH during this time. Keep in mind that a stable pH is also temperature dependent.



CANNA is the Dutch expert in cultivating your favorite crops. We'd like to welcome you to a way of growing that is all about passion, love for plants and achieving the best results in the easiest way. Many years of R&D and experience has resulted in high quality, easy-to-use and consistent plant fertilizers, substrates and expertise that will help you grow excellent plants.


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