Vulkastrat Humic Acid Granules

  • KLANZ 2-8 Vulkastrat mit Humingranulat

    KLANZ 2-8 Vulkastrat with humic granules



Vulkastrat® Humic Acid Granules

Vulkastrat with Humic Acid Granules has the same positive properties as our Vulkastrat. However, the humic acid granules mixed in reduce the pH value of the substrate to 5.4, thus creating an acidic soil environment.

The benefits of Vulkastrat Humic Acid Granules

  • Substrate for indoor greening
  • Ideal for single-layer indoor greening in accordance with FLL guidelines
  • Reduced pH value of approx. 5.4 for plants that require an acidic environment
  • High water storage capacity of over 30% by volume
  • Optimum air pore volume of 30% by volume
  • Weight approx. 930 kg per m³

Application of Vulkastrat Humic Acid Granules

Vulkastrat has a good water storage capacity and a high nutrient storage capacity. The substrate is approx. 25% heavier than Vulkaponic and can also be used for indoor greening. Due to its higher weight, it provides plants with a less developed root system with special support in the substrate structure. Also suitable as a hydroponic substrate and for all water-storing systems. When repotting, please note: Remove any loose material from the plants, place them in Vulkastrat at the same height and water well.


Our substrates are always unfertilized; we recommend using our KLANZ Vulkapower Orange fertilizer once or twice a year.

Form of Delivery of Vulkastrat Humic Acid Granules

  • Loose
  • FIBC
  • 25 L bag
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