This product is packaged in a reusable, refillable container in an effort to reduce the amount of wasted packaging. Return the empty bottle to The Homebrew Beer Academy for a $0.35 refund with your next purchase of the same item.
Calcium chloride is usually used in place of Gypsum when sulfates are not desired. Calcium chloride will adjust your mash pH down and add hardness.
Add 1-2 teaspoons in 5 gallons of water