|Dimensions||8 × 6 × 1 in|
Gypsum Powder 1lb Bag
Gypsum powder is used to adjust the pH in mushroom growing media such as grain, sawdust, straw and coffee grounds. Gypsum adds calcium carbonate and sulfur which helps stabilize and buffer PH levels, as well as adding minerals which are vital to mushroom fruiting. It also helps grains from clumping and sticking.