Calmag Pro (Plagron)

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Calcium and magnesium are essential for your weed plant. Water does not always contain enough of these substances. With Plagron Calmag Pro you provide a perfect foundation for your nutrition water during the entire growing cycle. Thanks to a balanced concentration of minerals, your plant benefits from strengthened cell walls and increased resistance. You can also buy Calmag Pro to promote root development and nutrient uptake. This product is mainly used with demineralized or soft water. It is also suitable for hydro cultivation and works perfectly in combination with LED grow lights. You can buy Plagron Calmag Pro in bottles of 500 ml or 1 liter.

Info Specs Reviews

Always a perfect base of nutrition water for your weed plants with Calmag Pro from Plagron. Prevents a calcium and magnesium deficiency!

Buying Plagron Calmag Pro for a perfect base

The water you give your weed plants often does not contain enough calcium and magnesium. Especially demineralised or soft water. That's why you use Plagron Calmag Pro. A balanced concentration of minerals in the nutrition water stimulates the performance of your plant in various ways.

  • Perfect base feeding water
  • Prevents calcium and magnesium (Ca/Mg) deficiency
  • Increases plant resistance and strengthens cell walls
  • Stimulates root development and nutrient absorption
  • Perfect for use with LED grow lights
  • Mainly used with demineralised and soft water

Calmag Pro Dosage & Use

Shake well before use. Use throughout the grow, every time you water. Add 1 ml of Plagron Calmag Pro per 1 liter of water.

Plagron Calmag Pro is also suitable for hydrological cultivation on clay granules and coconut fibre.

Composition Plagron Calmag Pro

  • NPK fertilizer (5-0-0).
  • Ca: 4.1%
  • Mg: 2%

Shelf life

Keep frost-free. Unopened products have a shelf life of 4 years. Check the shelf life based on the batch number on the packaging. Have you opened a product? Then it has a guaranteed shelf life of 6 months.


1 liter or 500 ml bottle Plagron Calmag Pro


Plagron has been producing a wide assortment of high-quality substrates, base fertilizers and additives for many years. The company is one of the market leaders for more than 25 years. Plagron products are intended for many kinds of breeders and guarantee excellent breeding performances.

SKU G-2781
Brand Plagron
Content 1 liter / 500 ml
Substrate / Medium Coconut Fibre, Hydro / Aero, Soil
Suitable for organic grow? No
Composition Liquid
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