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Canna Calmag Agent 1l
Canna Calmag Agent 1L is a concentrated water conditioner providing calcium and magnesium at an optimal 3:1 ratio (NPK 6-0-6, CaO 7%, MgO 2%). Specifically engineered to raise soft water and reverse osmosis water to the ideal background EC of 0.4 mS/cm that all Canna products require. Dosage: 0.1 to 0.5 ml per litre depending on water hardness. Stabilises pH and prevents calcium and magnesium deficiencies that compromise growth and bloom performance. Compatible with all substrates, particularly effective on coco. Always add last to your nutrient solution and wait 24 to 48 hours before making pH corrections. Fast delivery across Belgium.
Canna Calmag Agent 1L – Water Conditioner for Optimal Calcium-Magnesium Balance
Water quality is the foundation of every successful cultivation cycle. Soft water and reverse osmosis water lack the calcium and magnesium that plants require — and that all Canna nutrient products are calibrated for as a baseline. Canna Calmag Agent is a concentrated water conditioner (NPK 6-0-6, CaO 7%, MgO 2%) that raises your water to the ideal EC level without disrupting nutrient ratios in your feeding schedule.
Why water hardness matters
All Canna nutrient products are formulated for water with a background EC of 0.4–0.5 mS/cm — so-called "normal" water that naturally contains calcium, magnesium and bicarbonate. Soft water (EC below 0.4) and RO water lack sufficient levels of these secondary nutrients. The consequence: pH instability, reduced nutrient uptake and deficiencies manifesting as weak growth and compromised bloom development.
- Ca:Mg ratio 3:1: the ideal ratio for maximum uptake and minimal mineral antagonism.
- pH stabilisation: bicarbonate in the formula buffers pH and prevents fluctuations.
- EC correction to 0.4 mS/cm: the baseline all Canna products are calibrated for.
- All substrates: soil, coco and hydro, with particular benefit on coco where Ca/Mg binding is a known issue.
Correct application protocol
Fill your nutrient tank with water at 20–22°C. Add all base nutrition and additives first (Boost, Rhizotonic, CannaZym, PK 13/14). Add Calmag Agent last: 0.1–0.5 ml per litre until you reach EC 0.4 mS/cm. Wait 24–48 hours before making pH adjustments — the solution initially drops in pH then gradually rises through buffering.
Who needs Calmag Agent?
Growers in soft water regions, anyone using RO water, and coco growers in particular. Test your water with an EC meter: if background EC is below 0.4, Calmag Agent is not optional but essential. Combined with the right Canna base feed and CannaZym for root zone health, you establish the perfect foundation for every cycle.
Order Canna Calmag Agent 1L with fast delivery across Belgium. The invisible foundation that makes the difference between a good grow and an outstanding one.
How much Canna Calmag Agent per litre of water?
Add 0.1 to 0.5 ml per litre depending on your water hardness. The target is a background EC of 0.4 mS/cm before adding base nutrition. Always measure with an EC meter for precision.
When should Calmag Agent be added to the nutrient solution?
Always add Calmag Agent last, after all base nutrition and additives. Then wait 24–48 hours before making pH adjustments, as the pH initially drops then gradually rises through the buffering action.
Do I need Calmag Agent if my tap water is hard?
No. If your water EC exceeds 0.5, it already contains sufficient calcium and magnesium. For hard water, use an RO filter to reduce EC, then add Calmag Agent to reach the ideal level of 0.4.
Is Canna Calmag Agent compatible with all substrates?
Yes, Calmag Agent is compatible with soil, coco and hydroponics. It is particularly effective on coco, as coco naturally binds calcium and magnesium, causing deficiencies to develop faster than with other substrates.
