Emerald Harvest Cal-Mag Calcium-Magnesium Supplement

As low as $15.10 Regular Price $17.77
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    Keep your plants productive and green with Cal-Mag, Emerald Harvest’s calcium-magnesium supplement. Cal-Mag helps regulate plant growth and productivity and ensures essential chlorophyll levels when growing in coco coir and other media.

    Note: 55 and 270 gallon sizes are already heavily discounted and do not qualify for any further discounts or coupon codes.

    Keep your plants productive and green with Cal-Mag, a calcium-magnesium supplement from Emerald Harvest.


    Use Cal-Mag calcium-magnesium supplement to:
  • Prevent calcium or magnesium deficiency in your garden
  • Promotes chlorophyll production in your plants to keep them green and healthy
  • Activate the enzymes that help your plants uptake nutrients

  • Containing top-quality ingredients, Emerald Harvest Cal-Mag is designed to nourish crops with extra calcium and magnesium and create the right conditions for abundant flowering and a heavy yield. This is especially important when growing in some media, such as coco coir, but any garden can benefit.

    Growers use calcium-magnesium supplements to strengthen their plants and correct nutritional deficiencies inherent to some popular growing media. Calcium regulates growth and encourages plant development, while magnesium is essential for chlorophyll production, so your garden gets enough energy from light. Magnesium also activates enzymes your valuable plants need to uptake nutrients.

    Use Cal-Mag as a supplement to a base nutrient series for guaranteed professional results.

    Application Rate

    Directions: Mix 1 mL of Cal-Mag product per liter of nutrient solution

    Do not premix nutrients. Fill the reservoir with water first and then add nutrients. Monitor plants for signs of stress when following a more aggressive feeding program. Suitable for all plants grown hydroponically.

    Guaranteed Analysis:Cal-Mag | 2-0-0

    Total nitrogen 2.0%
    0.1% ammoniacal nitrogen
    1.9% nitrate nitrogen
    Calcium 3.0%
    Magnesium 0.5%

    Derived from calcium nitrate, magnesium, sulfate, calcium acetate, magnesium acetate and kelp extract.
    More Information
    NameEmerald Harvest Cal-Mag Calcium-Magnesium Supplement
    Alternate SKU/MPNEMHV450
    BrandEmerald Harvest
    FREE ShippingNo