Cal-Mag Emerald Harvest
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  • Cal-Mag Emerald Harvest

Cal-Mag Emerald Harvest

€9.50
Tax included
Formato: 0,5 L

Cal-Mag Emerald Harvest | Calcium & Magnesium Supplement for Plants


Cal-Mag by Emerald Harvest is a premium calcium and magnesium supplement formulated to boost vigorous growth, strengthen roots, and improve the uptake of essential nutrients in all types of grow systems. Unlike standard Cal-Mag products, this formula includes kelp extract (seaweed)—a natural source of nitrogen, minerals, and bioactive compounds that enhance overall plant performance.

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Cal-Mag Emerald Harvest | Calcium & Magnesium Supplement for Plants


Cal-Mag by Emerald Harvest is a premium calcium and magnesium supplement formulated to boost vigorous growth, strengthen roots, and improve the uptake of essential nutrients in all types of grow systems. Unlike standard Cal-Mag products, this formula includes kelp extract (seaweed)—a natural source of nitrogen, minerals, and bioactive compounds that enhance overall plant performance.

Ideal for coco coir, hydroponics, and any soilless or soil-based substrate, it prevents common calcium and magnesium deficiencies that affect plant development, photosynthesis, and yield.

Benefits of Emerald Harvest Cal-Mag

  • Prevents calcium and magnesium deficiencies, especially common in coco coir.

  • Enhances nutrient chelation and absorption for better feeding efficiency.

  • Promotes longer roots, stronger stems, and lush, healthy foliage.

  • Supports vigorous vegetative growth with added nitrogen, calcium, magnesium, and kelp extract.

  • Boosts chlorophyll production, essential for efficient photosynthesis and strong flowering.

📌 Guaranteed Analysis (2–0–0)

  • Total Nitrogen: 2.0%

  • Calcium: 3.0%

  • Water-soluble Magnesium: 0.5%

  • Derived from: calcium nitrate, magnesium sulfate, calcium acetate, magnesium acetate, kelp extract.

💡 Tips & Tricks

  • Use during high-demand stages: rapid vegetative growth, transition, or full bloom.

  • Great for supplementing base nutrients from other brands that lack calcium or magnesium.

  • Excellent for soaking and preparing coco coir before planting.

🎯 Characteristics

  • Dark brown to black liquid

  • Marine-like, strong aroma

  • Slightly viscous texture

  • Shelf life: 3+ years under normal conditions

The essential Cal-Mag supplement for achieving greener, stronger, high-yielding plants in any growing environment.

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