House and Garden CalMag, 5 lbs

SKU: HGCM05LB
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Availability: In stock

Lead time: This product ships in 2-3 business days

Shipment Restrictions
This item cannot be shipped to the following states: AK, HI


Container Size: 5 lbs.
Price:
Sale Price$35.54

House & Garden Product Documents

House & Garden CalMag Feed Chart

Designed to encourage rapid growth


House and Garden CalMag is a readily available Calcium/ Magnesium supplement designed to encourage rapid growth, and reduce problems associated with Calcium/Magnesium deficiencies such as blossom end rot. CalMag is highly recommended when using RO water or coco coir media that lack the proper levels of Calcium and Magnesium to ensure vigorous plant growth.

Disclaimer: KEEP OUT OF REACH OF CHILDREN. NOT FOR INTERNAL USE. Avoid contact with skin and eyes. Irritates the skin, mucous membrane, eyes and gullet. Wear suitable protective clothing. Store at room temperature between 44 and 86 degrees Fahrenheit (7 and 30 degrees Celcius). Keep sealed and dry during storage.


House and Garden CalMag Key Benefits

  • Up to 30% greater yields (when used with H&G additives)
  • More cost-effective than other powders on the market due to concentration
  • Customizable feeding program with the help of our professional grow consultants
  • Compatible with commonly used biological additives

How House and Garden CalMag Works

  • 1. Use Rate: 1.4 -4 g (0.3 - 0.8 tsp) per gallon or 0.35 - 1 g (0.1 - 0.2 tsp) per liter
  • 2. Lower rates are advised for environments where light, temperature, humidity and/or air flow may be less than ideal
  • 3. Do not apply dry powder directly to growing media

House and Garden CalMag Guaranteed Analysis

  • Total Nitrogen (N) - 12.0%
    • 0.1% Ammoniacal Nitrogen
    • 11.9% Nitrate Nitrogen
  • Calcium (Ca) - 10.0%
  • Magnesium (Mg) - 3%
    • 3.0% Water Soluble Magnesium

Derived From: Ammonium Calcium Nitrate Double Salt, Magnesium Nitrate

What problem does House and Garden CalMag solve for growers using RO water or coco coir?

House and Garden CalMag is specifically recommended for growers using reverse osmosis water or coco coir media, because both of these lack sufficient Calcium and Magnesium to support vigorous plant growth. Supplementing with House and Garden CalMag helps prevent deficiency symptoms such as blossom end rot and supports rapid, healthy development.

What nutrients does House and Garden CalMag provide, and what is the guaranteed analysis?

House and Garden CalMag delivers 12.0% Total Nitrogen (0.1% Ammoniacal Nitrogen and 11.9% Nitrate Nitrogen), 10.0% Calcium, and 3.0% water-soluble Magnesium. The formula is derived from Ammonium Calcium Nitrate Double Salt and Magnesium Nitrate.

How much House and Garden CalMag should be mixed per gallon or liter of water?

House and Garden CalMag should be mixed at a rate of 1.4 to 4 grams (0.3 to 0.8 teaspoons) per gallon, or 0.35 to 1 gram (0.1 to 0.2 teaspoons) per liter. Lower rates within that range are advised when growing conditions such as light, temperature, humidity, or airflow are less than ideal. The dry powder should never be applied directly to growing media.

Is House and Garden CalMag compatible with biological additives and other nutrient lines?

House and Garden CalMag is compatible with commonly used biological additives. When used alongside other House and Garden additives, the brand states growers can achieve up to 30% greater yields.

What makes House and Garden CalMag more cost-effective than other calcium-magnesium powders?

House and Garden CalMag is described as more cost-effective than competing powders due to its concentration, meaning a smaller amount of product is needed per gallon or liter compared to less concentrated alternatives. The 5-pound bag size also supports extended use for larger growing operations.

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