Use my free calculator to determine how much substrate you need: oneearthmushrooms.com
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The next step in our monotub process is to load the substrate and grain spawn into the tub. This is a quick and easy process, consisting of four basic steps and five tools/ingredients. As a bonus, I included some discussion about field capacity and answer some anticipated questions at the end. Enjoy!
![](https://i.ytimg.com/vi/clMYWd3I24I/maxresdefault.jpg)