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Plagron CalMag Pro 1l
Plagron CalMag Pro 1L is the most cost-efficient format for growers who routinely work with RO water or soft tap water sources. This one-litre bottle produces up to 1000 litres of mineral-corrected nutrient solution, providing calcium (4.1%) and magnesium (2%) in a sulphate-free NPK formulation (5-0-0) that eliminates ionic competition between both elements. Essential for LED cultivation where reduced plant transpiration compromises passive calcium and magnesium transport. Apply a maximum of 1 ml per litre at every watering throughout the full growth cycle on all substrates and systems. Order from plantandflower.be for fast delivery across Belgium.
Plagron CalMag Pro 1L – Scalable Mineral Correction for Multi-Cycle Operations
For growers running continuous cultivation cycles with RO water or naturally soft municipal water, CalMag Pro consumption is constant and predictable. The 1L format from Plagron maximises cost efficiency, producing up to 1000 litres of correctly mineralised water – enough to sustain multiple complete growth cycles without restocking.
Understanding the Calcium-Magnesium Relationship in Plant Physiology
Calcium and magnesium serve fundamentally different but equally critical functions in plant biology. Calcium is a structural element: it cross-links pectin molecules in cell walls, providing the mechanical rigidity that keeps stems upright and supports heavy flowering. It is also essential for cell division at root tips and apical meristems. Magnesium is a functional element: as the central atom in every chlorophyll molecule, it directly determines photosynthetic capacity. A plant deficient in magnesium cannot efficiently convert light energy into chemical energy, regardless of how optimal other conditions may be. CalMag Pro delivers both elements at a 2:1 Ca:Mg ratio that matches typical plant demand profiles.
Technical Profile
- NPK 5-0-0: nitrogen component supports vegetative growth without altering primary feed ratios at the recommended dosage.
- CaO 5.7% / MgO 3.3%: elemental calcium 4.1% and magnesium 2% in a sulphate-free carrier system for maximum bioavailability.
- Recommended dose for RO water: 0.75 ml/L for a starting EC of 0.4 – the optimal mineral baseline before base nutrient addition.
- Maximum dose: 1 ml per litre (1:1000) at every watering, full cycle.
Integration Into Professional Feeding Programmes
CalMag Pro is always the first additive in your mixing sequence. Add it to raw water, allow complete dissolution, verify EC, then proceed with base nutrients. This protocol ensures mineral correction is established before any other ionic interactions occur in solution. CalMag Pro is fully compatible with all Plagron nutrient lines – Terra, Alga, Cocos, and Hydro – as well as all substrate types and growing systems including recirculating hydroponics.
Building a Complete Mineral Programme
Pair CalMag Pro 1L with Silic Rock 1L to add silicon-based cell wall reinforcement on top of calcium-magnesium correction. For root zone optimisation, integrate Power Roots 1L into your early-stage protocol. The 1L format aligns with other litre-sized Plagron products, simplifying inventory management for growers who standardise on a single size across their entire programme.
Plagron CalMag Pro 1L is available at plantandflower.be – Belgium's dedicated growshop for serious cultivators. Fast shipping, expert support, and the products that make the difference between adequate and exceptional results.
How many growth cycles does Plagron CalMag Pro 1L cover?
At the recommended RO water dosage of 0.75 ml per litre, one litre of CalMag Pro produces approximately 1330 litres of corrected solution. At maximum dosage (1 ml/L), it yields 1000 litres. For a standard hand-watered setup, this covers multiple complete cultivation cycles.
Do I need CalMag Pro if my tap water is already hard?
Hard tap water with a baseline EC above 0.4-0.5 typically contains sufficient calcium and magnesium. CalMag Pro is not required in this case. Always measure your raw water EC to determine whether mineral supplementation is necessary.
Is CalMag Pro suitable for coco coir cultivation?
CalMag Pro is highly recommended for coco coir. Coco substrates naturally bind calcium through cation exchange, creating localised deficiencies even when base nutrients contain adequate levels. Adding CalMag Pro before base nutrients saturates these binding sites and ensures full mineral availability.
What is the difference between Plagron CalMag Pro and Silic Rock?
CalMag Pro provides calcium and magnesium for cell wall construction and chlorophyll production. Silic Rock delivers silicon dioxide that reinforces cell walls through mineral deposition and improves nutrient mobilisation in the root zone. Both products target different aspects of plant structural integrity and can be used together.
