Mushrooms require oxygen to grow—our .2 micron air filter maintains correct fuel and oxygen exchange whilst maintaining contaminants out. The “special sauce” of our mushroom grow luggage: two lbs of our organic mushroom substrate—a mixture of thoroughly composted and aged manure, peat moss, vermiculite, coconut coir, gypsum, and occasional grounds. https://frankw086ziq5.blogunok.com/profile