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Quantity
1
Description
Coarse #2 sponge rock (perlite) is a naturally occurring volcanic glass that has been heated to a high temperature, causing it to expand and become incredibly lightweight. Its unique structure allows it to hold air and moisture, making it a...
Reviews
5.0
1 rating
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good stuff for my purposes.
super light/airy; less structurally strong than some other brands but that doesn't bother me with perlite. Clean, not overly dusty, and the grading is alright. I'll be buying more.