Compact durable design holds up to 20 pounds of substrate. Monotubs are the easiest and most cost-effective way to scale up your indoor mushroom grow! They can be used as enclosed beds to house substrate and spawn for top-fruiting mushrooms. Or, they can be used as grow chambers for fruiting blocks and kits. Our beginner-friendly Boomr Bin Mushroom Monotub makes mushroom growing easy. Created by mycologists, its patent-pending design is optimized for all growers – whether you prefer low-tech grows, or want to connect automated upgrades (like fresh air fans and humidity controls.)