Fortified cells, vigorous roots, surging shoots, and an energised, productive plant, what’s not to love about the effects of Monkey CalMag? By comfortably satisfying any plant deficiencies in calcium and magnesium this rich, multi-purpose additive helps keep you right track for healthy growth and high yields. 

Suitable for use at all stages, Monkey CalMag’s quality calcium content quickly gets to work improving cell wall strength and boosting the development of new cells throughout your plant. Meanwhile its magnesium component stimulates chlorophyll production and in doing so enables improved rates of photosynthesis. This in turn helps your plant derive more energy from light, driving metabolic rates and feeding.

CalMag is virtually essential for soft or RO water growers, mightily handy with coco substrates, and applicable in a number of other situations. Whilst it’s important to careful identify your issue before resorting to CalMag, its effect when correctly applied can be simply stunning. 

• Calcium and Magnesium supplement 
• Suitable for all stages of growth and flowering
• Easily addresses calcium and magnesium deficiencies
• Calcium for improved cell structure and new cell development
• Magnesium for chlorophyll production and improved photosynthesis
• Improved photosynthesis = more energy
• High quality, UK produced additive – you know it’s fresh!

Order and pay online before 1pm for free, same-day, in-store collection (Mon to Sat).

Order and pay online after 1pm, or on a Sunday, or on a Bank Holiday for free, next-day, in-store collection.

* Please await your ‘Order Ready’ email before setting out to collect your order. *

On orders over £99 we offer free standard U.K. delivery* within 1-3 days of your order being placed.

Your goods will be transported securely, discreetly, and with tracking to ensure you have the best possible idea of when they’ll be delivered.

*exclusions and surcharges may apply, please see full Delivery Information for details.