Boosting that even just by 100-200 could be worthwhile. In our current house, we don't spend much time in the vicinity of the grow: has to have some effect in terms of reduced concentrations.įrom the sounds of things, two people might bring the concentration into the 800-900 ppm range. A closed glass sliding door separated that room from areas that would have benefitted from our exhaled co2. My guess is there was a lot more co2 concentrated in that room than the two humans in my household generate, plus it was directly with the plants. I very much liked what I saw, and would like to try to replicate it. So I'm left with the sense that increasing co2 levels will help a grow even if all other parameters are not optimised?Ĭlick to expand.Thanks for the input think I have to trust my direct experience: those plants were in a small washroom with a pilot light putting out 2.5 pounds of co2 per day. If I maxed out all other parameters besides co2, it would have been by a complete fluke, and I'm confident I didn't because I know growers can achieve better yields than I was used to achieving, without using co2. I didn't control PH, or nutrients, in any kind of scientific way. Nothing phenomenal, despite using the same earth, same worm castings, same light, same grow bags and same genetics.

And, you guessed it, my results in the second room were much more in line with what I was accustomed to seeing. but none of the co2 would have made it to the other room I subsequently used. The sliding glass door from the kitchen to the washroom was almost always kept shut, with some passive ventilation to the outdoors. The reason why I am fairly confident the co2 made the difference is that I later did grows in another room of the house. It is only now, 4 years later, that I suddenly thought back to the pilot light, and decided to look up how much co2 those push out. And back then, I didn't even put 2 and 2 together and suspect the pilot light had something to do with my success. This was perhaps my 6th grow, and the explosive growth was beyond anything I'd seen before.Īt my 6th grow, I can't say that I knew enough to maximise all parameters. I didn't plan it this way, but a few years back I did a grow in a tent that was placed in the washroom, where there also happened to be a pilot light.

Click to expand.Hey, old thread, but wanted to share my very limited experience with co2, that seems to contradict that everything else needs to be perfectly dialled in for it to have any effect at all.

Is exhale by output worth it