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(1 Grain Bag + 3 Substrate Bags)
Our Full Size Tub Refill Kit includes one 3lb sterilized grain bag and three 3lb premium sterilized substrate bags—everything you need to reload your monotub for your next gourmet or medicinal mushroom grow. The grain bag is perfect for clean colonization, while the nutrient-rich substrate supports healthy, high-yield fruiting. All bags are heat-sealed and equipped with filter patches for optimal air exchange and contamination resistance.
(1 Grain Bag + 3 Substrate Bags)
Our Full Size Tub Refill Kit includes one 3lb sterilized grain bag and three 3lb premium sterilized substrate bags—everything you need to reload your monotub for your next gourmet or medicinal mushroom grow. The grain bag is perfect for clean colonization, while the nutrient-rich substrate supports healthy, high-yield fruiting. All bags are heat-sealed and equipped with filter patches for optimal air exchange and contamination resistance.