I just had this idea - I used to play paintball and from one of my old guns I have a co2 tank with an adjustable on/off valve. I was thinking I could get the co2 tank filled weekly (its a 20 ounce so it would last a while), it would be a pretty effective means of supplying plants with co2. The one question I have is, is it possible to give a plant too much co2? If so, how much should it get daily? Thanks.
20 oz gas isnt much. vs how much u constantly will need. and the other point is that u will never know how hi or low ur co2 is unless u get a controller/monitor and they cost 350$. easier to just vent fully and forgetaboutit.