CalMag 2-0-0 | Complete Calcium, Magnesium and Iron Plant Supplement

$11.88 CAD

Cronk Nutrients' CalMag 2-0-0 offers a vital trio of calcium, magnesium, and iron. This mix strengthens plants, supports photosynthesis, and enhances nutrient uptake, ensuring your plants grow healthy and strong.

Size: 500mL


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Calcium, Magnesium, & Iron

Cronk Nutrients' CalMag 2-0-0 is a concentrated blend of calcium, magnesium, iron, and nitrogen, meticulously formulated for optimal plant growth and development. This blend is essential in providing support for plant cell walls, nutrient absorption, photosynthesis, and overall energy production.

Key Nutrients and Their Benefits:

  • Calcium: Strengthens plant cell walls, enhancing stability and nutrient absorption.
  • Magnesium: Supports photosynthesis and energy production, playing a crucial role in chlorophyll production.
  • Iron: Vital for chlorophyll synthesis, it's essential in facilitating effective photosynthesis and energy transfer.
  • Nitrogen: Critical for protein and DNA synthesis, leaf growth, and overall plant health.

Wide-Ranging Suitability:

  • Versatile Application: Ideal for vegetables, fruits, flowers, and more, making it a versatile choice for various plant types.
  • Compatible with Multiple Grow Mediums: Effective in soil, coco coir, hydroponic, and aeroponic systems, CalMag adapts to different growing conditions.

Application and Usage:

  • Foliar Spray or Root Drench: Apply as a foliar spray for direct leaf absorption or as a root drench for effective nutrient uptake.
  • Easy Integration: Seamlessly fits into any feeding schedule, enhancing your primary nutrient regimen.

Enhanced Plant Health and Yield:

  • Prevent Nutrient Deficiencies: Regular use of CalMag 2-0-0 helps prevent common deficiencies, especially in fast-growing plants.
  • Promotes Healthy Growth: Ensures optimal yields and robust plant growth across all plant types.

Incorporating Cronk Nutrients' CalMag 2-0-0 into your plant care regimen guarantees that your plants receive a comprehensive blend of essential nutrients. This product not only supports the fundamental aspects of plant growth but also enhances overall health and yield, making it an indispensable tool for growers aiming for peak plant performance.


Safe for All Plant Types & Grow Mediums

At Cronk Nutrients, we pride ourselves on creating fertilizers that are compatible with a wide range of plants and growing mediums.

  • All Cronk Nutrients'fertilizers are compatible with a wide range of plants, including hemp, vegetables, fruits, and flowers, making them a versatile choice for any grower.
  • Can be used in different growing mediums, including indoor or outdoor soil, hydroponics, and coco coir, ensuring that they work equally well in different types of setups.
  • You can be confident that you're using high-quality and safe products when you choose Cronk Nutrients fertilizers, which are designed to be effective and compatible with a variety of plants and growing methods.


  • Use with Every Watering: Apply as needed for your plants.
  • Mixing Instructions: Shake well before each use. Mix 1 tsp (5ml) per gallon of water and adjust pH to 6.2-7.0.
  • Foliar Spray Option: For enhanced growth, use as a foliar spray at 10-15 mls per gallon.
  • Recommended with Bonnie & Clyde: Strongly recommended for use in conjunction with Bonnie and Clyde for optimal results.

Conversions: 1 Teaspoon = 5mL | 1 Tablespoon = 15 mL | 1 Ounce = 30mL | 1 Cup = 240 mL

Guaranteed Analysis

Guaranteed Analysis


Total Nitrogen (N) - 2%

2% Nitrate Nitrogen

Calcium (Ca) - 3.2%

Magnesium (Mg) - 1.2%

Iron (Fe) – 0.1%

0.1% Chelated Iron (Fe)

Derived from: Calcium Nitrate, Magnesium Nitrate, Iron EDTA

Safety Data

Safety Data Sheet

CLICK HERE for a copy of Cronk Nutrients CalMag 2-0-0 SDS



Cronk Nutrients' online store ships all over Canada and the United States from Canada & the United States. If your country isn't a standard option, please contact us and we can get a shipping quote. We offer free shipping on any order in North America over $125* We ship via UPS, Purolator, FedEx, Canada Post or from our inventory at either or 

All orders are processed within 1 business day. 

Your order will be marked as fulfilled from the moment it’s been boxed up in the warehouse awaiting for the courier to pick it up. Once your order has been fulfilled, you will receive an email with your tracking number. Your tracking details will appear once the courier has processed the package.  CLICK HERE for more information about our shipping policy. 


Customer Reviews

Based on 47 reviews

Love it

Lionel Gumbs
Cal mag

I had no nutrients deficiency what so ever, routinely feeding every week. But other than that it's all green great stuff

Michel Beaulieu
Cal-Mag nificent !!

Absolutely the best cal-mag out there.

Great product Well Balanced

Follow the instructions and your plants will love it. You might even go on the lighter side. Healthy and robust ladies.

Thomas Browder
Great product

just now getting to use product just gave my plants their first feeding with cronk nutrients so far they love it so time will tell

Legal Disclaimer

At Cronk Nutrients, we are committed to providing high-quality liquid plant fertilizers suitable for a variety of horticultural applications. Our products are designed for legal and responsible use by home growers and gardening enthusiasts. We do not condone or promote the use of our products for illegal purposes.

Customers are responsible for adhering to their local and state laws regarding plant cultivation. It is the sole responsibility of the customer to ensure compliance with all applicable laws and regulations. Cronk Nutrients will not be liable for any misuse of our products in violation of any laws.

By purchasing our products, the customer acknowledges their obligation to comply with the legal standards set forth in their jurisdiction and agrees to use our products in accordance with these laws. Cronk Nutrients reserves the right to refuse service to anyone suspected of using our products for illegal cultivation.

Thank you for choosing Cronk Nutrients for your plant nutrition needs. Grow with confidence, grow legally.