DutchPro CalMag 1 liter calcium and magnesium supplement supporting strong plant structure, improved nutrient uptake, and prevention of deficiencies in all growing media

Dutchpro CalMag

Data sheet / description

DutchPro Calmag consists of a balanced combination of calcium and magnesium in liquid, plant-available form. The product contains no macronutrients such as nitrogen, phosphorus, or potassium and is designed specifically to correct Ca and Mg deficiencies.

The clean formulation allows for rapid uptake through the roots, supports cell structure stability, and promotes efficient photosynthesis. Suitable for all substrates and easily integrated into existing nutrient programs.

Product number	DPO-CM-1
Manufacturer	DutchPro Dutchpro B.V. / Dutchpro Nutrients De Steiger 86 Almere, Niederlande, 1351 AG info@dutchpro.com https://dutchpro.com/
Weight	1.00 kg

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26.90 €

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Product description

Grow Island presents: DutchPro Calmag – Precise calcium and magnesium supplementation for stable, high-performance plants
Premium additive for healthy plant structure and maximum vitality

With DutchPro Calmag, Grow Island expands its range with an essential supplement specifically developed to reliably correct calcium and magnesium deficiencies. These two minerals are among the most important building blocks of stable plant development and play a key role in cell structure, photosynthesis, and nutrient transport. Especially in modern growing systems such as hydroponics, coco, or when using soft water, calcium and magnesium deficiencies occur frequently – this is exactly where DutchPro Calmag comes in.

This new Grow Island product is aimed at demanding growers who want to supply their plants in a controlled, efficient way and maintain consistently high standards. Thanks to its highly available formulation, nutrient deficiencies can not only be corrected, but also prevented in advance.

Why calcium and magnesium are essential for plants

Calcium – the foundation of cell stability and growth

Calcium is a structural nutrient that plays a decisive role in the stability of cell walls and plant tissues. Without sufficient calcium, plants lose firmness, which negatively affects root development, shoot growth, and resistance. Young, fast-growing plant parts in particular require a constant supply of calcium.

DutchPro Calmag provides calcium in a form that can be absorbed directly by the plant and integrated into the cell structure. The result is stronger stems, more resilient leaves, and significantly improved resistance to stress from heat, cold, or mechanical strain.

Magnesium – the engine of photosynthesis

Magnesium is the central component of chlorophyll and therefore indispensable for photosynthesis and energy production. Magnesium deficiency often shows up as leaf discoloration and reduced growth performance. Without sufficient magnesium, the plant cannot efficiently utilize light energy.

Regular use of DutchPro Calmag stabilizes magnesium supply, resulting in deeper leaf color, enhanced photosynthesis, and vigorous growth – the foundation for healthy plants and high yields.

DutchPro Calmag – targeted deficiency prevention in all growing systems

When using reverse osmosis water, soft tap water, or coco substrates, natural sources of calcium and magnesium are often lacking. DutchPro Calmag was developed precisely for these conditions and integrates seamlessly into any existing nutrient program.

Grow Island recommends DutchPro Calmag both as a preventive supplement and for the acute correction of deficiency symptoms. Its precise dosing allows flexible adjustment to plant type, growth stage, and substrate.

Application and dosage

DutchPro Calmag can be used during both the growth and flowering phases.

Recommended dosage:

0.1 – 1.0 ml per liter of water
Depending on water quality, substrate, and plant demand

The product is simply added to the nutrient solution or irrigation water and is fully compatible with all common fertilizer systems. Regular use ensures stable nutrient ratios and prevents long-term deficiencies.

Benefits of DutchPro Calmag at Grow Island at a glance

Provides reliable calcium and magnesium supply
Supports stable cell structures and strong stems
Promotes efficient photosynthesis and energy production
Actively prevents typical deficiency symptoms
Suitable for soil, coco, and hydroponic systems
Ideal for soft water and RO systems
Highly concentrated and precisely dosable
Compatible with all fertilizers and additives
Available at Grow Island as a new professional supplement

Safety and storage

Store DutchPro Calmag in a cool, dry place protected from light. Always close the container tightly after use and keep out of reach of children. In case of eye contact, rinse thoroughly with water.

Conclusion: DutchPro Calmag – a reliable foundation for healthy plants

With DutchPro Calmag, Grow Island offers a well-designed solution to one of the most common challenges in modern cultivation. Targeted calcium and magnesium supplementation strengthens plants from within, improves growth, vitality, and resilience, and creates the basis for uniform development and stable yields. For growers who value control, quality, and long-term plant health, DutchPro Calmag is an indispensable part of nutrient management.