12x 3lbs Sterilized mushroom substrate Coco-coir vermiculate gypsum mix. Perfect substrate for high nutritious mushrooms and monotub

  

Coconut coir vermiculite and gypsum mix. 2:1 coco-coir and vermiculite 5% gypsum mix perfectly hydrated up to field capacity. Sterilized at 15psi at 121c degrees for 2.5 hours.

Sealed in front of the flow hood and packaged carefully. This item is made of coco coir and vermiculite, gypsum.