Calmag – Calcium & Magnesium 1 Liter | Prevents & Corrects Deficiencies

Calmag 1L is a highly concentrated calcium and magnesium supplement for plants in soil, hydroponics and coco. Calcium (Ca) is a structural building block of cell walls and provides strength; magnesium (Mg) forms the core of chlorophyll, the green leaf pigment that captures light energy for photosynthesis and the production of sugars. With Calmag you prevent and correct Ca/Mg deficiencies so that plants grow vigorously and reach their maximum potential.

Why Calmag?

Deficiencies in calcium or magnesium lead to chlorosis (yellowing), weak cell structures and inhibited growth. Calmag rapidly replenishes Ca/Mg, supports chlorophyll production and increases energy levels. The result is deep green leaf color, strong stems and stable development in both growth and flowering.

Key benefits

• Eliminates calcium deficiencies and magnesium deficiencies.
• Increases energy production via enhanced photosynthesis (more chlorophyll).
• Compatible with all substrates: soil/soil, hydro and coco.
• Highly concentrated for accurate, low dosing.
• NPK: 0.1 – 0.1 – 0.1 (slight NPK contribution, no interference with your schedule).

When do you use Calmag?

Use weekly from week 1 of the growth phase or as soon as symptoms of Ca/Mg deficiency become apparent. Calmag is particularly useful when growing with extra CO₂. Important: Use Calmag when growing with elevated CO₂ levels (manufacturer’s advice: only with extra CO₂; with high CO₂ levels, the Ca/Mg requirement is extra high). Match this to your growing schedule.

Dosage & application

• Dosage in general: 0.1 – 1.0 ml per 1 L of water.
• Frequency: apply weekly (start in week 1 of growth).
• Instructions for use: shake well before use; store cool, dark and sealed in original container; keep out of reach of children.

For whom is 1 liter ideal?

The 1L package is perfect for hobby growers or smaller setups that want accurate adjustments without large supplies. Suitable for soft water, coco growing and situations where you need occasional Ca/Mg supplementation.

Availability: Calmag is available in 1L, 5L, 10L and 20L. Please note that some packaging may vary by country.