Substrate & Casing - Perlite 5L   | Spore Spot

Substrate & Casing - Perlite 5L

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Perlite- sporespot

Perlite is an amorphous volcanic glass (SiO2) that has relatively high water content, typically formed by the hydration of obsidian. Perlite has the unusual characteristic of expanding and becoming porous when it is heated. It can expand to as much as twenty times its original volume.




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