Sub Stratum is a natural volcanic bioactive substrate originating from the Aso volcano in Japan. This type of substrate is very rich in minerals, which makes them great for breeding, plants grow much faster than in a standard substrate.
The substrate is in the form of fine granules, thanks to which it works as:
Composition: natural volcanic soil (Andisol), activated carbon, live bacterial cultures
A lamp that stimulates the growth of plants found in the lower parts of tropical forests.