Premium Mycology Bulk Substrate Bag | 3-Pound Sterile Blend

Supercharge your cultivation runs with the premium bulk substrate bags from Myco Alchemy Co.! Perfectly hydrated and ready to spawn straight out of the box.

We manufacture our substrate to strict laboratory standards inside genuine high-airflow Unicorn bags. This delivers the perfect 3-pound volume ratio to spawn your active grain jars directly into standard monotub setups.

Available in Two Master Blends:

- 100% Pure Coco Coir Blend: Premium, washed coco coir optimized for maximum moisture retention and aggressive growth.

- Specialty Hardwood Blend: Formulated with a premium wood-loving matrix specifically dialed in for elite exotic species.

Proudly produced by Myco Alchemy Co. Break the seal, mix with your grain jars, and cultivate abundance!