If you want to learn how to grow mushrooms in bulk, that is cost effective, and easy, then this is the tek for you! Update April 2018: A grow kit has been made for this tek, if you want to skip all of the hard labor of creating and sterilizing your own grain spawn and substrates, and have someone who has been doing this tek for more than 10 years make it for you, order the grow kit here from Mycology Kits online store: https://mycologykits.com/shop/grow-kits/dub-tub-grow-kit/