Mills CalMag

Stop cal-mag deficiencies in coco and RO water grows

Mills CalMag is a concentrated calcium and magnesium supplement formulated to prevent and correct the deficiencies that commonly appear in hydroponics, coco and soil. It supplies readily available calcium, magnesium and nitrogen to support root development, improve nutrient uptake and strengthen growth through both vegetative growth and bloom - especially valuable on reverse osmosis (RO) water, soft water or coco coir, where natural cal-mag levels fall short.

Yellowing leaves and weak stems from a cal-mag shortfall?

In indoor growing, calcium and magnesium deficiencies show as yellowing leaves, weak stems, slow growth and poor nutrient uptake, all of which drag on flowering and yield. Mills CalMag restores the balance, building a stronger root system, healthier foliage and a more resilient structure ready to carry dense flowers.

Key Benefits

• Prevents and corrects calcium and magnesium deficiencies
• Strong root development and vigorous plant growth
• Improved nutrient uptake for healthier plants
• Stronger stems and leaves for better structure
• Ideal for RO water, soft water and coco, where cal-mag runs low
• Helps stabilise EC and works with the full Mills range and most feeding programmes

How to Use

• Shake well before use.
• All media (hydro, coco, soil): 0.5-1ml per litre added before base nutrients, then mix thoroughly.
• When to use: throughout veg and bloom, particularly on coco, RO or soft water.
• Frequency: with every feed where extra calcium and magnesium are needed.
• pH and EC: check after mixing (around pH 6.5 for prevention) and adjust as needed.
• Do not exceed the rate unless treating a confirmed deficiency.