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Calcium & Magnesium (Cal-Mag)

Calcium & Magnesium (Cal-Mag)

Calcium & Magnesium (Cal-Mag)

Calcium and magnesium are important secondary nutrients that support healthy plant growth and development. Cal-Mag supplements provide additional calcium and magnesium where required, helping growers maintain a balanced plant nutrition programme across a range of growing methods and media.

Our Cal-Mag range includes liquid and powdered supplements from leading plant nutrition brands, with options suitable for different feeding programmes and growing conditions. These products can be particularly useful where water or base nutrients provide insufficient levels of calcium and magnesium, or where additional supplementation is recommended by the nutrient manufacturer.

Browse our range of calcium and magnesium supplements and choose a product suited to your plants, growing medium and existing nutrient programme. Always follow the manufacturer's recommended dosage and application instructions.
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Go Grow is a family-run UK grow store with over 15 years of experience in organic horticulture, indoor gardening, and hydroponics.

From first-time growers to seasoned pros, we help you choose the right equipment, nutrients, and solutions — backed by expert advice and a real UK store you can trust.

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