Description

HESI CalMag is a calcium and magnesium mineral supplement developed to correct the most common deficiencies that may occur when using rainwater, reverse osmosis water or particularly soft tap water.

Calcium and magnesium are essential elements for plant health: calcium contributes to stronger cell walls and a more stable plant structure, while magnesium plays a key role in chlorophyll formation and proper photosynthesis.

HESI CalMag allows an optimal amount of these essential minerals to be added to the nutrient solution, creating a more stable and balanced base before preparing the feeding mix. It is especially useful when the starting water is low in minerals or does not provide enough support for healthy, vigorous growth.

The formula also contains iron chelate and molybdenum, two trace elements that help support plant metabolism and proper development throughout the different growth stages.

Technical Sheet

• Product: HESI CalMag
• Type: calcium and magnesium supplement for plants
• NPK: 5-0-0
• Magnesium: 7.5% MgO
• Calcium: 5.0% CaO
• Trace elements: iron chelate and molybdenum
• Application: to be added to the water before preparing the nutrient solution
• Recommended for: rainwater, reverse osmosis water and soft water
• Main function: corrects and helps prevent calcium and magnesium deficiencies
• Main benefits: supports stronger cell walls, efficient photosynthesis, healthy growth and improved nutrient stability
• Available sizes: 250 ml, 500 ml, 1 L, 2.5 L, 5 L, 10 L