VOLCANIC ALVEOLAR LAPILLUS.BY VEBI - 25L

Preparation of profesional substrates for acidophilic plants;

Volcanic alveolar lapillus by Vevi is material with large cation exchange capacity, excellent water retention and porosity. Indispensable in the cultivation of the most common cacti and succulents. It comes from selected and finest quarries.

The lapilli are the product of explosive volcanic eruptions and is formed as a result of a violent expansion of the gases dissolved in the acid washing of chemical composition. The rapid cooling of the rock has prevented its crystallization, trapping inside the gas and generating alveolar minerals expanded in a more or less accentuated way.
During solidification the vapors present in the magma, suddenly released, have caused the bulge of the entire mass of the magma and during this rapid cooling phase the differences in the physical structure of the various inert volcanic have been created.
The volcanic lapilli are formed from a magma with lower content of silica. The lower viscosity and the slower cooling of the lava have facilitated the leakage of a certain amount of the gases present in the magma. So minerals characterized by emptiness of an average diameter greater than those of pumice but far fewer were formed.

Recommended Use:

• Preparation of profesional substrates for acidophilic plants;
• Rooting of cuttings, plantings, hydroponics;
• Repotting, soil lightening;
• Hydroponics and aeroponics