Unless you have a sealed tight room supplemental co2 is a waste, even if you were sealed (you’re not) those mycelium culture bags are not doing much.
to seal a room you get rid of the carpet, you put down a vapor barrier and lay over some laminate flooring, you caulk your edges(ceilings and wall) around the window too. You need air conditioning, humidifier, dehumidifier a whole bunch of shit.
best advice I can give is keep it simple. Unless you’re pushing light and feed really hard and your environment is completely dialed in co2 is a waste.