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Ok, I recently bought 2 of those "perfect" terrariums I so fondly spoke about. They are intended to germinate seedlings but I figured they would be fine for fruiting mushrooms. Now I realize that they top (dome) doesn't fit snugly on the bottom (tray). Do fruiting chambers need to be air-tight, or is a little bit of air flow a good thing?
Another question I have is about humidification and air exchange. I spoke with a hydroponics store employee and told him that I needed a fan. They didn't have anything to suit my small scale production, however, he recommended a symbiotic relationship with beans (due to their high nitrogen fixation) and mushrooms.
Now, I am wandering If I enclosed the two together (the beans consume CO2 and produce O2 and vice versa for the mushrooms), would it work on such a small scale? Better yet, if I put the beans (growing in perlite with fertilizer) and an aquarium air pump in one terrarium (exposed to sunlight) and had the pump pushing the humid, oxygenated air to the fruiting terrarium in the dark and then a passive tube leading back to the bean terrarium, would this be a good "closed" environment?
Or is this just a really stupid idea? Am I over-complicating things?
All I know is right now I have two terrariums that are not air-tight, and a bunch of beans growing in an aquarium with perlite and fertilizer... And I have no idea what I'm doing...