Like bong said they are dangerous thats why a PPM controller will help maintain the correct and safe levels. And you want to make sure the area is sealed or is exhausted every so often..............:rasta:
kushman45 Reviewed by kushman45 on . Best mounting position for co2 generator Today I got something that I have been wanting for a couple of years now. A co2 generator and the various other stuff you need with it. Yippie! All Green Air brand, all from a hydro store. (I know, I'm crazy.) My wife isn't thrilled, but now I get to see if the claims of 20 to 40 percent increase in yeild are true, along with the claims of earlier bloom time. I'm not looking forward to the work involved in tearing apart my grow room and rebuilding it, but I am looking forward to finally getting Rating: 5