Sterilized Substrate Bags: Clean, Balanced, Ready to Fruit

Why Our Substrate Bags Just Work (The Inocblock Difference)

• Dialed-In Formula: A proven blend of coco coir, coarse vermiculite, and azomite trace minerals for strong, even colonization and reliable fruiting.
• Perfect Moisture Profile: Scientifically hydrated to hold enough water for full colonization and multiple flushes, without turning muddy, compacted, or anaerobic.
• Commercial Sterility Assurance: Each batch is sterilized in a 150L industrial autoclave at 127°C for over five full hours, giving you deep, core-level sterility across the entire block.
• Structure + Aeration: Coco coir provides a fibrous base while vermiculite keeps micro-pockets of air and moisture, creating a fluffy, breathable substrate that mycelium loves to run through.
• Mineral Support: Azomite adds a broad spectrum of trace minerals, supporting vigorous mycelial metabolism and strong, healthy fruit body development.
• HEPA-Filtered Final Packing: After sterilization, bags are cooled, inoculation ports and filters are handled, and everything is sealed in a HEPA-filtered workspace to lock in cleanliness.
• Zero-Prep Convenience: No buckets, boiling water, or pasteurization experiments — just open, add spawn, mix, and incubate.
• Fresh, Not Warehouse-Stale: Produced in small, fast-moving batches; bags are never stored for more than a few days before shipping so you’re always working with fresh substrate.

Choose Your Volume: Options & Sizes

• 3 L (The Standard Block): Ideal for a single monotub, shoebox, or dedicated fruiting chamber — a perfect all-around size for most projects.
• 5 L (The XL Block): Great for larger tubs, double-decker grows, or heavily spawned projects where you want fast colonization and thick canopies.
• Bulk Multiples: Order multiple blocks to synchronize several tubs at once, scale a flush schedule, or run side-by-side genetics and substrate tests.