Sterilized CVG Substrate for Monotub and Bulk Mushroom Growing

The RMS Monotub Mix (CVG substrate) is a sterilized, manure-free substrate designed for growing mushrooms in monotubs or directly in the bag. Made from a balanced blend of coco coir, vermiculite, and gypsum (CVG), it delivers strong water retention and nutrient availability-without the variability or risks of traditional manure-based substrates.  Formulated from plant-based ingredients, it delivers manure-like water retention and nutrient availability—without the variability or risks associated with traditional substrates.

Fully hydrated and sealed in Unicorn 3T grow bags with 0.2 micron filters, this substrate is ready-to-use right out of the bag.  Ideal for monotub grows, bulk substrate expansion, or in-bag fruiting, it's built for consistent performance across all growing environments.

Also known as CVG substrate (coco coir, vermiculite, and gypsum), this mix is a go-to choice for growers looking for consistent, manure-free bulk growing results.