![Gypsum powder solution grade](http://mpsubstrates.com/cdn/shop/files/IMG_4957_{width}x.jpg?v=1709736181)
Provide your substrate blends with a boost of calcium and pH buffering by adding gypsum. Comes in 5 & 10 pound bags. Price include shipping
Provide your substrate blends with a boost of calcium and pH buffering by adding gypsum. Comes in 5 & 10 pound bags. Price include shipping