Green House Feeding CalMag – Highly Effective Calcium Magnesium Fertilizer for All Cultivation Methods (125g | 500g | 1kg | 2.5kg)
Green House Feeding CalMag is the ideal solution for growers who want to ensure a reliable supply of calcium and magnesium to their plants – two essential elements for vigorous growth, robust cell structure, and premium fruit quality. Whether you are using hydroponics, coco substrate, soil, or an automatic irrigation system – this highly soluble EC fertilizer ensures rapid nutrient availability and maximum application efficiency.
Suitable for All Cultivation Systems – from Indoor Grow to Professional Greenhouse
Thanks to its outstanding purity and chlorine-free formulation, Green House Feeding CalMag is suitable for both foliar feeding and fertigation. The fertilizer dissolves completely in water, making it perfect for dosing systems such as Dosatron or Netafim.
Available Sizes for Every Requirement:
125g – Ideal for small grow projects or as a supplement for soft water
500g – Perfect for hobby gardeners and ambitious indoor growers
1kg – For regular use in home or small commercial cultivation
2.5kg – For commercial applications or long-term supply
Analysis (EC Fertilizer):
Total Nitrogen (N): 13.5%
– Nitrate Nitrogen (N-NO₃): 13.1%
– Ammonium Nitrogen (N-NH₄): 0.4%
Calcium Oxide (CaO): 16.7% (water-soluble)
Magnesium Oxide (MgO): 6.0% (water-soluble)
EC (1g/L): 1.2 mS/cm
Recommended Application:
Foliar Feeding: 0.2 g/L every 10 days (if deficiency is visible)
Fertigation with Soft Water: 0.5 g/L (0.6 EC)
Hard Water: 0.2 g/L 1–2x per week
Stock Solution: 10–15 kg/100 L for dosing systems
Tips & Tricks:
Do not mix CalMag with other calcium supplements.
Always use an EC meter for precise dosing.
Can be combined with all Green House Feeding base fertilizers such as Hybrids, Short Flowering, or Booster.
To avoid nitrogen late in flowering, discontinue CalMag in week 6 and replace with GHF Calcium Chelate.
Also combinable with fertilizers from other manufacturers.
Scope of Delivery:
1x Green House Feeding CalMag Powder Fertilizer – depending on selection: 125g, 500g, 1kg or 2.5kg
Your Advantages at a Glance:
Fast-acting calcium and magnesium source
Perfect for all cultivation systems & substrates
Excellent water solubility & dispensability
Supports vigorous plants, healthy roots & high yields
Manufactured by one of the leading producers in professional plant cultivation
FAQ – Frequently Asked Questions about Green House Feeding CalMag
Ich erhielt nachdem ich einen Defekt mit dem Plastikdichtungsring bei Vetter-Grow gemeldet hatte, innerhalb von 10 Minuten eine Antwort und mir wurde Ersatz angeboten. Das nenne ich Service. Vielen Dank
