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Calmag Dutchpro is an essential calcium and magnesium supplement, designed to correct nutritional deficiencies and strengthen the structural and metabolic development of plants in all types of crops, especially in soft or reverse osmosis water.

Calmag Dutchpro is a professional additive that provides two key elements for healthy plant growth: calcium (Ca) and magnesium (Mg). These nutrients play vital roles within plant metabolism.
Calcium is responsible for strengthening cell walls, giving structure, resistance, and development capacity to plant tissues. Magnesium, on the other hand, is the core of chlorophyll, the green pigment responsible for capturing sunlight to carry out photosynthesis and generate sugars, the energy base for growth.
In hydroponic crops, in coco, or with low mineralization water (such as those treated by reverse osmosis), Ca and Mg deficiencies are common. Calmag Dutchpro has been formulated to prevent and correct these deficiencies quickly, improving the absorption of nutrients such as nitrogen and potassium, optimizing the development of roots, stems, and flowers.
Its use is ideal in demanding crops such as cannabis cultivation, providing strength, vitality, and resistance to stress. Compatible with all types of automatic irrigation systems and growing media, this supplement is a key reinforcement to keep your plants healthy and productive.
It is recommended to apply Calmag Dutchpro from week 1 of growth and continue throughout the cycle if additional CO₂ is used.
Shake well before use. Store in a cool, dry place, out of reach of children. Always keep in its original tightly closed container.
The formula of Calmag Dutchpro provides the following essential nutrients:
Made with highly soluble components for efficient absorption without leaving residues.
Its use visibly improves the health and overall yield of the crop.
Calmag Dutchpro is a specific nutritional supplement that provides calcium and magnesium in the ideal proportions for plant development. Its use is essential when growing with soft water, or in situations where plants require an additional supply due to high CO₂ levels or demanding environmental conditions. Its application allows for more efficient photosynthesis, greater sugar production, and vigorous, balanced growth.
It is an indispensable tool within the Dutchpro Fertilizers program.
At Hydroponics Blanes, your trusted Grow Shop, you can find Calmag Dutchpro at the best price and with guaranteed stock. We make discreet shipments throughout Spain and Europe, offering personalized attention and expert advice. We are a Grow Shop in Spain committed to the quality and success of your crop.
Calmag Dutchpro is the perfect solution to eliminate calcium and magnesium deficiencies, improve photosynthesis, and ensure a healthy and resistant plant structure. Whether you grow in coco, hydroponics, or soil, its use guarantees complete nutrition, especially in systems with soft or osmosis-treated water.
At Hydroponics Blanes, you have access to the best Dutchpro Fertilizers for every stage of cultivation. Boost your harvest from the ground up with Calmag Dutchpro.