Unique Pasteurization Technique: Our specialized method balances nutrient retention with contamination prevention, ensuring robust mushroom growth without the nutrient loss seen in full sterilization. Optimized for Maximum Yield: Crafted by expert mycologists, our substrate supports diverse growing setups—monotubs, tents, bag tek—and is designed for ideal water retention and nutrient balance, promoting optimal mushroom development. Ready-to-Use Convenience: Each cvg substrate grow bag arrives pre-hydrated and pasteurized for immediate use, made from a consistent blend of coco coir, vermiculite, and gypsum. Just add your inoculated (fully colonized) spawn to start growing! Advanced Climate Control: Featuring a dual-sided 0.5 micron filter, our grow bags optimize fresh air exchange and moisture retention, creating the perfect environment for your mushrooms to thrive. Reliable and Supportive: Designed for long-lasting room-temperature storage with a full replacement guarantee and expert customer support, our substrate bags are crafted to elevate your mushroom cultivation journey. Discover the ultimate solution for mushroom cultivation with Olympus Myco's Mushroom Substrate Grow Bag. Our premium blend of coco coir, vermiculite, and gypsum is specifically designed to cater to a diverse range of mushroom types, including the most popular dung-loving and oyster mushrooms. Each bag is meticulously pasteurized to ensure a sterile environment, fostering healthy mushroom growth. The substrate is rigorously tested to meet field capacity standards, ensuring the perfect balance for mushroom development. What sets our substrate apart is the innovative dual-sided 0.5 micron filter patch. This design facilitates superior air exchange, crucial for mushroom growth. The result is a consistent, humid environment ideal for mushroom cultivation. Olympus Myco prioritizes your convenience. Our grow bags are ready to use right out of the box, eliminating the need for extensive preparation. For optimal results, we recommend combining a three-pound bag of our substrate with one pound of your chosen colonized grain spawn. Whether you're a novice or an experienced grower, our substrate is versatile enough for various cultivation methods, including monotubs. Choose Olympus Myco for professional-grade mushroom cultivation that delivers impressive results every time. Join the community of successful growers who trust Olympus Myco for their mushroom growing needs.