• by thatcat on 7/12/2016, 1:24:47 AM

    >considering smoke from kitchens as source for CO2

    Mushrooms expel CO2 and intake O2; there are several products such as [0] but you could just as easily grow some edible mushrooms to raise CO2 within the enclosure.

    [0] http://www.planetnatural.com/product/exhale-co2-bags/