Boost Your Plants with Mills CalMag

Running soft water or growing with coco?

Your plants will need more calcium and magnesium – and that’s exactly what Mills CalMag delivers.

It’s a highly concentrated supplement that prevents common deficiencies, strengthens plant structure, and helps you get the most out of your base nutrients.

Whether you’re using reverse osmosis (RO) water, growing under high light intensity, or dealing with yellowing leaves – this is your go-to fix.

Why Use Mills CalMag?

• Protects against deficiencies by stopping weak stems, interveinal yellowing and other classic signs of cal-mag deficiency.
• Improves nutrient uptake in coco coir, where calcium and magnesium can easily get locked out.
• Helps with water quality in soft water areas or when using RO water.
• Boosts overall plant health by supporting enzyme function, photosynthesis, and cell wall structure.

When To Use It

Use Mills CalMag:

From veg through to flowering – it’s suitable for all stages of growth.

When you spot deficiency signs like leaf yellowing between veins, brown spots or stunted growth.

As a preventative in coco or soft water systems to maintain healthy mineral levels.

When growing under high-output lighting (HID or LED) that increases nutrient demand.

How To Use

1. Shake well before use to ensure ingredients are fully mixed.
2. Add 0.5–1.5 ml/L depending on your water quality and plant stage.
3. Use alongside your base nutrients – Mills CalMag is a supplement, not a substitute.
4. Monitor EC levels – Mills CalMag contributes to overall electrical conductivity.

Tip: If using reverse osmosis water, always add CalMag first before mixing other nutrients – it helps stabilise the water and avoid lockouts.

Perfect For:

Coco growers

RO users who need to replace stripped-out minerals.

Growers in soft water areas where calcium and magnesium levels are naturally low.

Anyone dealing with calcium or magnesium deficiency symptoms.