My room is pretty sealed, just not for c02. The door has warped a bit in the room and thats a release point... also my ac unit would be a release point. But Ive read it increases yield as high as 20% so I'm guessing something is better than nothing.

Do you guys recommend co2 boost? Seems like the cheap way to do it, I'm sure not nearly as effective tho.
razzapiggy Reviewed by razzapiggy on . Introducing co2 mid cycle? I am three weeks into 12.12 right now, and my plants are looking a little on the smaller size. I'm hopeful they fill in nicely, and I have a little extra cash and I figured I would look into buying a co2 emitter. I don't want to burn the gas, I just want the system that will release on its own. How much of an investment am I looking at and is it okay to introduce it several weeks in? My nutes PPM is at 1100 right now. My room is not 100% sealed, but I'm sure it would help considerably right Rating: 5