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Plagron CalMag Pro is a concentrated calcium and magnesium supplement essential for soft water, RO water, and coco growers. It prevents nutrient deficiencies, strengthens cell walls, and boosts photosynthesis, ensuring healthy growth and high-performance yields throughout the vegetative and flowering phases.
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CalMag Pro from Plagron is a professional-grade calcium and magnesium supplement designed to prevent nutrient deficiencies and strengthen plant structure. This highly concentrated additive is particularly vital for growers using soft water, reverse osmosis (RO) water, or cultivating in coco coir, where calcium and magnesium are often in high demand. By providing a perfectly balanced ratio of these two essential secondary macronutrients, CalMag Pro ensures optimal photosynthesis, efficient nutrient transport, and robust cell wall development. Integrating this into your feeding regime prevents yellowing leaves and stunted growth, providing a solid foundation for high-performance cultivation.
Key Benefits of using Plagron CalMag Pro
- Prevents and Corrects Deficiencies: Effectively treats common calcium and magnesium shortages, preventing leaf spotting and chlorosis.
- Optimises Nutrient Uptake: Balanced levels of Cal-Mag improve the plant's ability to absorb other essential elements from your base nutrients.
- Strengthens Cell Structure: Calcium is a building block for cell walls, leading to sturdier stems and a more resilient plant overall.
- Ideal for LED and RO Water: Perfectly compensates for the increased calcium demand under intense LED lighting and the lack of minerals in filtered water.
How to Use Plagron CalMag Pro
Dosage: A maximum of 1ml of CalMag Pro per 1 litre of water (1:1000).
Instructions:
- Shake the bottle well before use.
- Add CalMag Pro to your water first, before adding any other nutrients or additives.
- Mix thoroughly.
- Use this solution with every watering throughout the entire growth and flowering cycle for best results.
For growers using coco substrates, CalMag Pro is the perfect partner for Plagron Cocos A&B. If you are growing in soil, it provides a vital boost alongside Plagron Terra Bloom to ensure your plants have the mineral support they need during heavy flowering.
Can be used in all grow mediums including soil, coco and hydroponics.
Available in 5 litres.
Frequently Asked Questions
When should I use Plagron CalMag Pro?
You should use CalMag Pro throughout the entire life cycle of the plant, from the vegetative stage through to the end of flowering. It is especially important if you are using soft water, rainwater, or RO water, which naturally lack these minerals.Is CalMag Pro suitable for hydroponics and coco?
Yes, Plagron CalMag Pro is highly recommended for hydroponic systems and coco coir. Since coco naturally binds calcium, using a supplement ensures there is enough available for the plant to absorb.Can I use CalMag Pro with other brands of nutrients?
Absolutely. CalMag Pro is a universal mineral supplement that is compatible with all brands of base nutrients and additives. It is designed to fit seamlessly into any existing feeding schedule.Will CalMag Pro affect the pH and EC of my nutrient solution?
Yes, adding CalMag Pro will increase the EC (Electrical Conductivity) of your water. Always add it to your water first, check your EC, and then add your base nutrients. You should also check and adjust the pH of your final solution as needed. Head to pH Management for all your EC and pH needs.SKU: 1843 Free delivery on orders over £60*
- UK Mainland onlyStandard Delivery £4.95
- Heavy / Large item surcharge £2 per item
- 1-3 Days**
- UK Mainland onlyExpress Delivery £8.95*
- Next Working Day**
- UK Mainland onlyScottish Highlands £15.95*
- 2-5 Days***Can not be used with Heavy / Large items
**If ordered on a working day before 2pm cut off (Saturday and Sunday are not classed as working days).Please See Delivery and Returns page for more details.
