DrMyc Needle Punted Cotton Monotub Filters - 2.75" for 2.5" Monotub Holes

Designed specifically for serious mushroom cultivators, DrMyc Monotub Filters provide clean airflow, reliable contamination protection, and optimized humidity retention for monotub mushroom cultivation systems.

Unlike cheaply manufactured monotub filters made with generic materials, DrMyc Filters are engineered with mushroom cultivation performance in mind. Each filter utilizes high-quality 3M adhesive for a secure, long-lasting seal and features a specialized hydrophobic coating that helps retain humidity inside your monotub while still allowing for proper fresh air exchange during colonization and fruiting.

Each filter is also E-Beam sterilized, an advanced sterilization process that helps ensure your monotub filters arrive clean and ready for use. This added step provides growers with greater confidence during sterile mushroom cultivation workflows and monotub setup.

For additional contamination protection, every sheet of DrMyc Monotub Filters is securely attached to a protective backing plate, helping keep filters cleaner during shipping, storage, and handling. Unlike loose-packed alternatives, filters remain protected until you’re ready to apply them to your monotub. Because apparently even tiny airborne mold spores wake up every morning looking for opportunities to ruin someone’s grow project and emotional stability.

Built for practical mycology applications, these monotub filters are fit-for-purpose tools developed with a deep understanding of mushroom cultivation systems, airflow balance, humidity retention, and contamination prevention.

Excellent For:

• Monotub mushroom cultivation
• Bulk substrate fruiting chambers
• Gourmet mushroom growing
• Functional mushroom cultivation
• Fresh air exchange (FAE)
• Monotub contamination prevention
• Humidity retention in monotubs
• DIY mushroom grow setups

Features

• High-quality 3M adhesive backing
• Hydrophobic coating for improved humidity retention
• E-Beam sterilized for cleaner handling
• Protective backing plate for contamination prevention
• Designed specifically for mushroom cultivation
• Reliable fresh air exchange for monotubs
• Strong adhesion to monotub surfaces
• Cleaner handling compared to loose-packed filters
• Designed for serious mycology workflows

Available Options

• 6-pack for Grower’s Select Monotubs
• 24-pack for Max Yield Bin monotubs

Whether you're building your first monotub or refining a high-performance mushroom cultivation setup, DrMyc Monotub Filters are designed to help support cleaner grows, balanced airflow, and healthy fruiting conditions from colonization through harvest.