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Microppose Silicone Jar Lid Covers (6-Pack)

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Item #: SLC1 -
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Price: $11.99
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These 100% high-temperature silicone lid covers are designed to protect your lid filters and injection ports from steam, making them an eco-friendly alternative to foil. Their unique molded design...

These 100% high-temperature silicone lid covers are designed to protect your lid filters and injection ports from steam, making them an eco-friendly alternative to foil. Their unique molded design allows for gas exchange during sterilization and channels water droplets to the side during cooling. This feature helps extend the life of your lid filters by preventing water pooling on them as your jars cool down in the sterilizer. Made from food-grade silicone, these lid covers are both renewable...

Monotub Adhesive Filter Disks (20-Pack)

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(28 Reviews)
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Item #: FD20 -
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Price: $14.99
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(Save 50% Halloween Sale!)Introducing our new Polyfil filter disks, available in a convenient bulk pack of 20, expertly designed to take the guesswork out of air exchange in your mushroom...

(Save 50% Halloween Sale!)Introducing our new Polyfil filter disks, available in a convenient bulk pack of 20, expertly designed to take the guesswork out of air exchange in your mushroom cultivation setup. Crafted from durable synthetic fibers with a 3M adhesive backing, these disks ensure optimal air exchange and humidity control for monotubs, Martha Tents, or any bulk casing grow. Each disk, 2.5" in diameter, easily covers holes up to 2.25" and installs in seconds, providing a reliable...

Monotub Adhesive Filter Disks (6-Pack)

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(41 Reviews)
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Item #: FD4 -
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Price: $6.99
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A monotub filter disk is a circular piece of material, typically made of polypropylene, that is used to filter the air entering a monotub used in the cultivation of mushrooms.The filter disk is...

A monotub filter disk is a circular piece of material, typically made of polypropylene, that is used to filter the air entering a monotub used in the cultivation of mushrooms.The filter disk is placed over the ventilation holes on the top of the monotub and is secured in place with a lid. The purpose of the filter disk is to prevent contaminants, such as bacteria and other airborne particles, from entering the growing environment while still allowing for proper air exchange.The filter disk...

Reusable Self Healing Injection Ports (25 pack)

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Item #: INJ -
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Price: $4.99
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This 25-Pack of reusable self-healing injection port is designed for inoculating substrates with mushroom spores or culture. Made from a high-temperature silicone and EPDM foam rubber blend, it...

This 25-Pack of reusable self-healing injection port is designed for inoculating substrates with mushroom spores or culture. Made from a high-temperature silicone and EPDM foam rubber blend, it features a puncturable membrane that "self-heals" after syringe use, enabling repeated applications without extra equipment. The adhesive backing is engineered to endure autoclave temperatures, ensuring durability and convenience in sterile environments. ...

Reusable Self Healing Injection Ports (50 Pack)

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Item #: INJ2 -
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Price: $12.99
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A reusable self-healing injection port is a device that is used in the process of inoculating a substrate with mushroom spores or culture. It is typically made from a special blend of...

A reusable self-healing injection port is a device that is used in the process of inoculating a substrate with mushroom spores or culture. It is typically made from a special blend of high-temperature silicone and EPDM foam rubber, and features a small, puncturable membrane that "self-heals" after being pierced by a syringe. This allows for repeated use of the injection port without the need for additional equipment or materials. The adhesive backing used on these ports is typically designed...

Round Air Filter Vents 0.22 Micron with 3M Backing (50-Pack)

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Item #: FV3 -
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Price: $6.99
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A Round Air Filter Vent 0.22 Micron with 3m Backing is a small circular filter used for facilitating gas exchange in live culture containers, grain jars, and liquid cultures. The filter has a...

A Round Air Filter Vent 0.22 Micron with 3m Backing is a small circular filter used for facilitating gas exchange in live culture containers, grain jars, and liquid cultures. The filter has a 0.22-micron rating, which means it can effectively trap particles and contaminants, preventing them from entering the culture. The filter also has a 3m backing, which is a strong adhesive that allows the filter to be easily applied to clean hard surfaces, such as standard metal and plastic jar lids. This...

Wide Mouth Jar Cultivation Lids with Injection Port (6-Pack)

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Item #: LD6 -
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Price: $12.00
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Our cultivation lids are designed to fit seamlessly onto any commonly used "wide mouth" 90mm canning jar, making them a preferred choice among cultivators. These lids are equipped with a top-quality...

Our cultivation lids are designed to fit seamlessly onto any commonly used "wide mouth" 90mm canning jar, making them a preferred choice among cultivators. These lids are equipped with a top-quality synthetic filter, measuring 22mm, and capable of filtering out particles as small as 0.2 Microns, which is the highest level of filtration available. The use of these lids enables a continuous flow of fresh air while preventing the entry of any unwanted contaminants. They are suitable for...

Mushroom Filter Disks

Mushroom filter disks protect your mushrooms from contaminants like bacteria, mold, and pests while still providing adequate airflow. They fit tightly on canning jars, monotubs, indoor greenhouses, and other growing containers.

If you need synthetic filter disks for your mushroom grow, you can find them at Midwest Grow Kits. Our filter disks are built for quality, durability, and efficiency. They're made from water-resistant fibers and strong 3M adhesive and have the optimal flow rate and density for ventilation. And whether you need just a few mushroom filter disks or want to buy bulk, we have a variety of affordable packages that will accommodate your needs.