Unicorn are great value, great quality and have a proven track record in the mushroom cultivation world. Some of the smaller bags like the 10T have an option of a pre-installed injection port, these are 4 times as expensive as the port-less bags so you’d be better of making your own filter patch by gluing them on, using silicone or just micropore tape. Now, I have Shroomjak by my side and I will won't doubt my skills or feel like an imposter ever again. Our distributors and industry partners achieve success with a common starting point: Unicorn’s breathable grow bags.

Once a substrate is inoculated, the bag will carry the mycelium through all the stages of growth before it’s time to fruit which is achieved by cutting the tops of the bags off, making an X in the side or removing from the bags all together. Honestly though, don’t get too caught up or worried about the different filter sizes in the beginning. This helps those using liquid culture to create spawn bags with as little chance of contamination as possible. You want to control the pressure of your autoclave, or other sterilizer to help you control the internal temperature as well. The grow bags purpose is to contain your substrate or spawn in a sterile, aseptic environment allowing the mycelium to grow through the medium uncontested from contamination.

The bags loosely copy unicorn bags for sizing, though they don’t follow the same sizes all the time, sometimes the stated size is different from the actual size you receive. Our second most popular bag is the 3T which has a finer filter which is ideal for grain spawn use to prevent contamination. They have 4 different filter types A, B, T and TV however, TV isn’t a very common filter type as it’s made with Tyvek. Transformative use is a relatively new addition to fair use law, having been first raised in a Supreme Court decision in 1994. They differ to unicorn as depending on the bag, they have 2 to 6 filter strips that run the whole width of the bags!

This allows the mushroom grower or farmer to create growing blocks and sterilized grain bags that are ready for inoculation with your ideal mushroom varieties. As the bags are plastic, once full, they can be sealed by heat sealers, this process can be unreliable and sometimes requires several attempts to get bags to seal. The 14A is the most popular grow bag for both its large size for a mushroom grow block, and its bag filter size for proper airflow when working with wood-based substrates. Controlling the airflow is a large part of what makes Unicorn Mushroom Grow Bags unique, and perfect for growing mushrooms. Whether you’re just getting started with mushroom cultivation bags and growing mushrooms, or you’re looking to successfully position yourself as a distributor or large agricultural business, you can rely on Unicorn Bags as your starting point for mushroom, spawn, and entomopathogenic (biocontrol) fungi cultivation.Depending on your use you will choose a filter patch that is built into the bag to control air flow. When environmental conditions for your cultivation and growing processes require exceptional quality and performance, ensure you’ve selected mushroom cultivation bags that will exceed your expectations and help you thrive. The physical filter patch size changes from bag to bag size, the smaller bags have smaller patches, the bigger ones have bigger! Only thorough tests will tell which bag is the most suitable for which products and which bag gives the best results for your purpose. However, some people opt to use cable ties, food clips, rubber bands, string or even purpose made clamps to seal the bags.

This allows the bags to be folded so they can lay flat for storage when full, and this bag design lends itself to multiple bags being placed in an autoclave or sterilizer. Unicorn also sell bio-degradable growbags, pillow bags, Oyster bags, bag clamps as well as tumblers and tissue culture pots!As a mushroom grower you recognise that you will lose the odd bag to contamination or manufacturing imperfections, but when it becomes a regular occurrence of defects the failure accumulates over time. The filter patches are seemingly all the same both in physical dimensions and pore size which appear to be 0.