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✦ Verified product
Gypsum Calcium Sulphate 2oz/1lb
USD 1.29
Size
Let's Do Wine & Buffalo BrewShop
Verified independent store
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Gypsum is Calcium Sulphate and is useful for adding calcium if the water is low in sulfate. Use approximately 1-2 tsp per 5 gallons. 2 oz jar.