Designed by Max Yield Bins to make indoor mushroom growing easy, this monotub is equipped to control airflow circulation and humidity retention. Durable, with tight-fitting latches to keep the lid sealed to the base, it's fit with a custom light-blocking base to prevent mushrooms from growing on the sides or bottom of your bin.

Dimensions: 22.5”(L) x 15.5”(W) x 12”(H)

Our best-selling Boomr Bag is a sterile bulk mushroom substrate formulated by mycologists to maximize your mushroom yield. It features a proprietary blend of composted horse manure, coco coir, and several quality substrate supplements (although we keep the exact blend a secret!) Over several years, it has been perfected for dung-loving mushroom species and is widely-trusted by mushroom growers. Each bag weighs 5 pounds. (Note: Bags are hydrated to field capacity.)

Our sterile grain bag with injection port was formulated by mycologists to maximize the speed and size of your mushroom grow. Each spawn bag contains 3 lbs of our proprietary blend featuring hydrated, nutrient-rich organic millet and wheat berries. Bags also include a self-healing injection port for use with a spore or culture syringe plus a 0.2 micron filter patch to block airborne contaminants while providing even gas exchange. Bag weighs 3 pounds. (Note: Bags are hydrated to field capacity.)

Important: Coco coir should only be added to your monotub once it's fully colonized and pinning. 

Coco coir provides many benefits to the mushroom cultivation process. In addition to moisture retention, the porous structure of coir material enables good exchange of air and water and is highly resistant to contaminants making it ideal for mushroom growing. It is often used as casing, added to substrates, and is even used in garden beds as an alternative to peat moss. (Bag weighs 5 lbs.)

These self-adhesive filters are made from 100% recycled filter material and sized to fit over 2" holes on monotubs. Use these in place of polyfill to keep out foreign spores and other contaminants while maintaining humidity and air exchange. Each sheet contains 6 filters. (Use on 2" holes found on the lid of the monotub.)

This latex-free, hypoallergenic paper micropore tape adheres well and leaves minimal adhesive residue upon removal. It's designed to keep humidity in and allow for proper air exchange, and its black color will make it nearly invisible to the eye one applied. Each roll measures 10 yards. (Use on small holes around the base of the monotub.)

Monotub Tek Method Set Up & Grow Guide

Why is the difference between the large and small holes on the monotub?

Both the large and small holes are for gas exchange. However, given the proximity of the small holes to the substrate, many growers will remove the micropore tape during fruiting to increase oxygen -- especially if the mushroom caps are too small and/or the stems are too thin and stringy. That said, if the mushrooms are growing just fine, many will just leave the micropore tape on (as it protects against contamination.)

Do I need to use micropore tape on the small holes, or can I just leave them open?

During colonization, you don't want the small holes open. Covering them with the black micropore tape keeps out contaminants and maintains a higher CO2 level.

North Spore's products shall be used only for lawful purposes. North Spore does not condone Psilocybin (Psilocybe cubensis) or hallucinogenic (magic) mushroom growing in jurisdictions where it is currently illegal.