A powerhouse calcium-magnesium and iron liquid fertilizer for a robust, deficiency-free garden. Boost plant growth & health with


HydraCalMag (1L / 32oz)


  • Full Protection against deficiencies and diseases.
  • Advanced micronutrients enhance plant health and yield.
  • Root growth support strengthens and fortifies plants.
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Unlock your garden's full potential with HydraCalMag

Unlock your garden's full potential with HydraCalMag from HydraGarden, a superior Calcium Magnesium supplement that delivers all the essential nutrients your plants need in one easy dose.



This powerful formula combats common gardening problems like yellowing leaves and stunted growth by combining vital micronutrients such as Calcium, Magnesium, Iron, Molybdenum, and Zinc.

Best For:

  • Gardening Methods: Adapts to any setting, including hydroponics, indoor, outdoor, soil, and soilless.
  • Plant Types: Perfect for all plants, including flowers, vegetables, and seedlings.
  • Application: Use it your way—either as a soil enhancer or a direct foliar spray.
  • Optimized For: Preventing and treating plant deficiencies and diseases, including blossom end rot in tomatoes and peppers.

Packaged in practical 1-liter bottles and crafted in small batches, HydraCalMag reflects over 40 years of expert development. Incorporate it into your gardening routine to simplify plant care, enhance growth, and prevent and treat deficiencies.

Looking for a bloom booster? Explore HydraVeggies for enhanced growth in fruits and vegetables!



All indoor and outdoor plants, such as:

  • Arugula
  • Basil
  • Bok choy
  • Brussel Sprouts
  • Cabbage
  • Celery
  • Chamomile
  • Chives
  • Cilantro
  • Collard Greens
  • Corn
  • Cucumber
  • Dill
  • Kale
  • Lettuce
  • Mint
  • Mustard Greens
  • Oregano
  • Parsley
  • Peppers
  • Radish
  • Rosemary
  • Sage
  • Savory
  • Spinach
  • Squash
  • Sunflowers
  • Strawberries
  • Swiss Chard
  • Thyme
  • Tomato
  • Watercress


  • Shake Well: Ensure the contents are thoroughly mixed before use.
  • Dosage:
  • For Deficiency Prevention: Add 5ml (1 capful) of HydraCalMag per 4 liters of water or 20ml (4 capfuls) per gallon of water.
  • To Treat Existing Deficiencies: Add 2.5ml of HydraCalMag per liter of water or 10ml per gallon of water.
  • Feeding Frequency: Apply HydraCalMag in between your regular nutrient feedings each week.

Application Tips

  • pH Adjustment: Adjust the pH of the water to between 6 and 7 for optimal nutrient absorption.
  • Soil Considerations: Ensure that the soil has sufficient drainage to prevent waterlogging and associated root issues.
  • Foliar Spray Application: If applying as a foliar spray, either turn off grow lights or apply at dawn or dusk to avoid leaf burn. Spray directly onto the leaves.

Feeding Guide:

* Fourth picture

This chart offers a general guideline to begin your plant-feeding routine. Adapt frequency and dosage as your plants respond and grow.

** Each bottle features a child-resistant cap for safety and peace of mind.



Handcrafted in small batches. HydraGrow has been in development for 40 + years, this fertilizer is made using quality premium ingredients from Canada and the USA. We manufacture in small batches to ensure accuracy. 

This nutrient rich formula is made with High Quality Naturally Occurring and Chelated Macro & Micro Nutrients your plants can actually absorb and use to flourish and grow to their maximum potential. NO cheap China ingredients.

Guaranteed Analysis

  • NPK 2.6-0-0
  • Total Nitrogen: 2.6%
  • Calcium: 3.2%
  • Magnesium: 1.2%
  • Iron: 1.3%
  • Molybdenum: 0.0015%
  • Zinc: 0.00075%

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