HINTS:
- Have you guys ever heard about LECA? Very usual in Europe.
- If one component looks like, has the texture of, the same color as, and the sizes and forms are the same as an known soil, then it *must* be that soil!
- There is no Zeolite in South America.
- One of the components still unidentified is a classic in not so rich countries. Easily available, good water retention, good drainage, difficult to break down unless frozen, very cheap (for free usually) the only not so good feature is its color.