| Item # | WM10LB |
| Weight | 1 LBS |
Gypsum (also known as Calcium Sulfate) is used to add permanent hardness (Calcium ions) to brewing water. 1 gram in 1 gallon changes the salt levels by 61.5 ppm calcium, 147.5 ppm sulfate and adds 153.5 ppm to the hardness.
| Item # | WM10LB |
| Weight | 1 LBS |
