The MaxGro Bulk Substrate Bag is a professional-grade mix designed to give your mycelium the perfect environment for vigorous growth and strong fruiting. Each 3lb bag contains a carefully balanced blend of coco coir, vermiculite, gypsum powder, and coffee grounds, sterilized to ensure a clean, contamination-free foundation for your cultivation projects.
This nutrient-rich substrate combines the airy structure of coco coir with the moisture-retention of vermiculite, the calcium boost of gypsum, and the nitrogen-rich kick of coffee — creating a complete growth medium that supports fast colonization and heavy yields.
At 3lbs, this bag provides ample substrate for expanding grain spawn into bulk trays, tubs, or bags, making it ideal for both hobbyists and advanced growers scaling up production.
Why MaxGro Bulk Substrate?
Coco Coir: Provides a light, airy structure and excellent water retention.
Vermiculite: Improves moisture distribution and prevents compaction.
Gypsum Powder: Adds calcium and sulfur for stronger, healthier growth.
Coffee Grounds: Enriches the mix with nitrogen for accelerated colonization.
Each bag is lab-sterilized and sealed for maximum reliability, giving you the confidence that your mycelium will thrive in a clean, nutrient-packed environment.
The MaxGro Bulk Substrate Bag is a professional-grade mix designed to give your mycelium the perfect environment for vigorous growth and strong fruiting. Each 3lb bag contains a carefully balanced blend of coco coir, vermiculite, gypsum powder, and coffee grounds, sterilized to ensure a clean, contamination-free foundation for your cultivation projects.
This nutrient-rich substrate combines the airy structure of coco coir with the moisture-retention of vermiculite, the calcium boost of gypsum, and the nitrogen-rich kick of coffee — creating a complete growth medium that supports fast colonization and heavy yields.
At 3lbs, this bag provides ample substrate for expanding grain spawn into bulk trays, tubs, or bags, making it ideal for both hobbyists and advanced growers scaling up production.
Why MaxGro Bulk Substrate?
Coco Coir: Provides a light, airy structure and excellent water retention.
Vermiculite: Improves moisture distribution and prevents compaction.
Gypsum Powder: Adds calcium and sulfur for stronger, healthier growth.
Coffee Grounds: Enriches the mix with nitrogen for accelerated colonization.
Each bag is lab-sterilized and sealed for maximum reliability, giving you the confidence that your mycelium will thrive in a clean, nutrient-packed environment.
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