Description
This Calcium Carbonate is made from limestone.
In mushroom cultivation, it serves as a PH buffer for the substrate. This means that the PH will remain steady as the mushroom grows. Mycelium releases acid compounds to help digest the substrate media when it expands. These acids could drastically change the PH of the substrate, making it difficult for mushrooms to fruit. Calcium carbonate prevents the substrate from becoming too acidic for the mycelium to produce fruits. Depending on the method, soak, boil, and dry your grains and add Calcium Carbonate. Mix well and then sterilize.
Use 5% of calcium carbonate for the total weight of your grain spawn.
Note: Calcium Carbonate is NOT for pasteurizing. We have a listing for Calcium Hydroxide  Ca(OH)2, which is used for pasteurization.
Looking to Make Grain Spawn or more Pre-Mixes? Check these listings in our store.
