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Hydrofarm Super Coarse Perlite, 100L, 1.7 Cubic Feet
- Perlite is a unique volcanic mineral
- Expands from four to twenty times its original volume when it is quickly heated to a temperature of approximately 1600-1700 degrees F
- Holds moisture and nutrients and makes them available to plant roots
- Because of the physical shape of each particle, air passages are formed which provide optimum aeration and drainage
- perlite is sterile, it is free of disease, seeds, and insects
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