$1.99
Rehydrate one teaspoon per five gallons of wort in a cup of water for 12-24 hours, and then add it to the kettle within the last 10 to 15 minutes of the boil.
30 g -1.99
64g 1 tsp per 5 gal will increase concentration (MG++)ion 52ppm [(SO4–] ion. 207 ppm
28g pack 1 tsp per gallon adjusts water hardness by 297ppm.
50g pack 1 tsp per gallon will increase water hardness by 277ppm