Mother Earth Coarse Perlite - 4 cu ft
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<b>[Product Information]</b><br>
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<li>Mother Earth perlite is naturally occurring siliceous rock that when heated to 1600° F expands up to 20 times its original volume</li>
<li>This kilning process is very similar to popping popcorn and produces a growing media that is sterile and has a neutral pH of 7.0</li>
<li>The exceptional physical properties of this perlite make it tops in the perlite world for adding porosity to soil and soilless mixes</li>
<li>This perlite has numerous hydroponic applications as well</li>
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