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Quantity
1
Perlite is a non-crystalline form of volcanic glass that expands and becomes porous when heated to 1600F. The water molecules trapped inside the rock turn to vapor and cause the kernel to expand just like popcorn!
Ingredients:
#3 coarse p...
Reviews
5.0
31 ratings
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Perfect sized perlite
Finding the right sized perlite is tricky, but this is a great size and the bag is a decent size. This lasted through several re-pottings