This calculator is perfect for those who want to cultivate mushrooms in a monotub or shotgun fruiting chamber using a mixture of coco coir, vermiculite and gypsum. Just enter the dimensions of your fruiting chamber (the tub used to grow your mushrooms in), and scroll down for the results. A written procedure for producing grain spawn can be viewed here, and a video of the process is here. If you don't have a pressure cooker and prefer to use an instant pot to sterilize, the procedure is here. When it comes time to mix up your CVG substrate, this procedure may come in handy. A video of the CVG process is here.
This calculator is for those who wish to cultivate mushrooms in a grow bag or other similar container using an enriched hardwood substrate (a mixture of hardwood pellets, gypsum powder, and wheat bran). Enter the dimensions of your grow bag and scroll down for results. A written procedure for producing grain spawn can be viewed here and a video of the process is here. The video for the process of producing the hardwood substrate is located here.