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Avoid humidity
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sealed containers produce only mycelium without stromata
Coco Coir Brick Gro-Plus 5kg Premium 10 Pound Coir Block grain spawn Avoid humidityGro Plus Premium Coco Coir Brick OMRI Organic Listed Low EC Mushroom Substrate The Gro Plus Coco Coir Brick is a premium, triple washed, low EC growing medium trusted by mushroom cultivators, organic gardeners, and hydroponic growers. Designed for bulk substrate preparation and high yield fruiting systems, this OMRI listed organic coir expands into a fluffy, contaminant resistant base perfect for monotubs, grow bags, and raised beds. Available in both