please help, one guy told me as long as i have sealed room the window ac will not effect co2 another guy said runnig co2 with a window ac is a waste of co2. what is the truth will my window ac affect my co2????
exactly you are bringing in air from outside the room so its not sealed. there is air leaving that room some how so co2 is going to be lost. Also co2 is heavier than air so if your putting it out below your plant level then its not giving you much of an effect unless you FLOOD the room with it.