Roots Organics CalMag calcium magnesium supplement for fast growth
Roots Organics CalMag delivers a clean, targeted blend of calcium, magnesium, and sulfur designed for fast-growing, heavy-feeding plants. It’s free of added nitrogen, phosphate, and potassium, so you can fine-tune supplementation without throwing off your base fertility plan.
Nitrogen-free CalMag additive for hydroponics and soil
Ideal for hydroponic systems, coco, and soil programs, this CalMag additive helps strengthen new growth and supports overall vigor when demand spikes. The formula is derived from gypsum and kieserite, providing reliable mineral sources growers can trust. Pair it with quality base nutrients—like Roots Organics Buddha Grow and Buddha Bloom—to maintain consistent inputs while correcting common calcium/magnesium gaps. Use as needed during fast growth phases or when using low-mineral water to keep plants performing at their best.
Key features:
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No added N-P-K (nitrogen, phosphate, potassium) to protect your primary feed ratios
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Supports fast growth and heavy feeding periods when Cal/Mg demand increases
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Adds sulfur alongside calcium and magnesium for more complete mineral support
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Derived from gypsum and kieserite for straightforward mineral supplementation
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Works well in hydroponics, coco, and soil as a flexible nutrient add-on