Easiest way to get CO2

[TravelingThai]

If my idea works it may be the easiest way to get a little extra co2 on your plants. I was thinking (keep in mind I'm no pro) carbonated water like Perrier would add a bit of co2 but this idea is not tested. I was wondering if I could get some criticism on this topic or maybe someone who tried could shed some light?

[NorCalHal]

Unless your room is really set-up to optimize co2, I wouldn't sweat it. IMHO, as long as you have a good vent system, the little amount of co2 you would gain is negligable.

From my experience, you really have to have a room set-up air tight to see any real gain with co2.

So I think that the perrier would be better off used on ice in a glass.

[cman86]

the only cheap co2 method i know of, but never used is water sugar and active yeast. look that up online. i dont know how much you will get off that, but more than the carbonated water.