This injectable all-in-one unit is designed for use with CVG (Coco/coir, vermiculite, gypsum) loving cultures. We feature a grain floater that makes use of the passive air transpiration of the filter patch during development. After mixing the fully colonized grain section into the CVG substrate below it, either transfer to a fruiting tub/container OR let the mixed substrates fully colonize and fruit right there in the bag!