WHAT IS A MONOTUB?
A monotub is used as a fruiting chamber for growing mushrooms. It represents an alternative to grow bags. It is a transparent plastic container that helps create a controlled environment to encourage the growth of mushrooms. Here are its main functions:
1. Optimal conditions: A monotub allows you to create conditions that mimic the natural conditions necessary for mushroom growth. These conditions include specific temperatures, high humidity, adequate lighting and fresh air exchange.
2. Protection against contamination: The monotub helps prevent contamination by other types of fungi or microorganisms, keeping the indoor environment sterile.
3. Growing Space: The monotub provides an enclosed, controlled space for growing mushrooms, allowing mushrooms to be grown in indoor conditions, regardless of the outdoor climate.
4. Ease of Use: Monotubs are generally easy and inexpensive to make and use, making them popular among mushroom growers, especially those who are new to growing mushrooms.
5. Reusability: Unlike grow bags which are disposable after one use, monotubs are reusable. After harvesting the mushrooms, the monotub can be cleaned and prepared for a new crop.
With a monotub, it is easier to monitor and adjust growing conditions, which can be beneficial for beginners who are still learning to understand the specific needs of their mushrooms.
MATERIALS NEEDED TO BUILD A MONOTUB
To build your own monotub, you will need these items:
EQUIPMENT
- A cutter
- A marker
- A meter to measure
- A 55–60 l bin
- A black trash bag
- Microporous tape
- Isopropyl alcohol
THE STEPS TO BUILD A MONOTUB
1. Start by measuring 12cm from the bottom of your bin to the top. Since the substrate level is generally between 7 and 11 cm, the 12 cm point will be where you make your holes, just above the surface of the substrate.2. After making this measurement, divide the width of the bin into three equal parts. For example, for a 42cm long bin, divide it into three 14cm sections. The holes should be placed on these division lines. Additionally, it is important to mark a hole under the bin handles. To do this, you can simply drill under the handles or cut close to the edge.
3. Once you have marked your bin, drill the holes. This can be done with a 38.1 mm (1.5 inch) hole saw, a drill bit or by simply cutting with a heated Stanley knife. Be careful, as the bins can crack or break if you are too aggressive. If this happens, don't worry, because the cracks can be repaired with duct tape!
4. Next, add a liner to the bin. This covering will prevent the stems from growing out the sides of the container. While it's OK for them to grow sideways, it's best to keep them centered in the container for easier harvesting. A regular black trash bag will do. Place the bag inside the bin and make sure it fits snugly against the base of the container. Next, cut the bag so that the top of the bag falls just below the holes made on the long side. You can tape the edges for a better fit, but it's not absolutely necessary.
Finally, clean the monotub with alcohol and fill the tray with substrate, and your monotub is ready for use.