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Growing Substrates
Displaying 6 to 8 (of 8 products)
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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... |
$4.95 $2.45 Save: 51% off
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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... |
$1.99 $1.79 Save: 10% off
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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... |
$4.95 $3.95 Save: 20% off
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Displaying 6 to 8 (of 8 products)
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