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Growing Substrates
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Crushed Oyster Shell Flour. A natural source of calcium carbonate. Used to raise the pH from acidic to base. Primarily used in casings to help... |
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Diatomaceous Earth - Horticultural Grade - 1lb Used as a non-toxic insecticide, due to its physico-sorptive properties. The fine powder absorbs... |
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Very high quality Gypsum, also known as Calcium Sulfate, or CaSO4. pharmaceutical grade and food grade powder. Highly used in the mushroom industry... |
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White perlite granules are the result of the expansion of combined water vaporizing in the crude mineral and forming enclosed air pockets. Because of... |
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When processed in special furnaces, the mineral ex-foliates (or expands) in the the accordion-like layered particles familiar to many as a part of... |
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Displaying 1 to 5 (of 8 products)
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