Controlling the airflow is a large part of what makes Unicorn Mushroom Grow Bags unique, and perfect for growing mushrooms. They differ to unicorn as depending on the bag, they have 2 to 6 filter strips that run the whole width of the bags! Autoclavable just means that the bag is able to withstand the high temperatures of an autoclave, sterilizer, or your favorite pressure cooker if you are just starting out.

Some grow bags and filters are made from Polyethylene, this can’t withstand the high temperatures of sterilisation, so the substrate or spawn is sometimes irradiated with gamma rays to sterilise it or by using lower temperatures and pressures of steam for longer periods of time, known as super pasteurising. Our fungi, spawn, and mushroom growing bags offer unparalleled versatility, so you can meet your goals with assurance – and on your terms. Polypropylene is a thermoplastic that is often used in the food industry thanks to it’s high melting point of 160c and wide range of properties. They’ve also developed them in such a way that the filters don’t transpose much moisture so the grain or substrate pressing up to the filter doesn’t dry out. You want to control the pressure of your autoclave, or other sterilizer to help you control the internal temperature as well.In this video we’re going to look at the three most common (and quite possibly only) filtered gusseted bags on the market. I tried to find out the actual pore size through digging around but couldn’t find any information on it, though I’d imagine they are between 0. The first part is the plastic type PP or PE being polypropylene or polyethylene and the thickness of the plastic, 75 or 50, measured in microns. This helps those using liquid culture to create spawn bags with as little chance of contamination as possible.

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. Make sure to keep the bags away from the metal sides of your equipment, or they will melt with the metal contact. Hobbyists and large-scale companies alike require high-quality, durable, contaminant-free mushroom cultivation bags for maximum success at a low cost. 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.

Growing oysters on pasteurised straw for example, simple lay flat polyethylene tubing can be used since you don’t actually pasteurise the bags, just the substrate. Our second most popular bag is the 3T which has a finer filter which is ideal for grain spawn use to prevent contamination.

Honestly though, don’t get too caught up or worried about the different filter sizes in the beginning. I can’t honestly give you accurate information on this since different substrates and grains have different volumes.There are also special bags on the market for pasteurised substrates like these blakk brand log bags that have hundreds of pre-perforated holes. Once you’ve had some time and experience with different bags, you’ll find the ones you like, fits in with your sterilisation method and suits your size of fruiting chamber! 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. Since every mushroom farm is unique we also carry many other sizes and even some specialty Unicorn Grow Bags. The smaller filter pore size is generally used for spawn while the larger is for substrate, however, these are interchangeable and often it comes down to the users preference and requirements.

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. 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. A new work based on an old one work is transformative if it uses the source work in completely new or unexpected ways. Only thorough tests will tell which bag is the most suitable for which products and which bag gives the best results for your purpose.Saco2 are more expensive but have a high quality and good pedigree being a sister company of mycelia. It would be rather annoying to have 1000 XLS bags or PP50/SEU4/V40-51 bags turn up only to realise they don’t fit your setup!