Got it,.. Need a
Yes, in close quarters, I think it's probably the most efficient way actually. It's certainly a clean method. I might pick up a bottle actually.. I've messed with dry ice in the past a few times, but it's not efficient.
Really great looking plants so far,
@iTurniGrow - would never guess you were a noob if you hadn't said so!
For a cheap, albeit imprecise, means of incorporating co2 into an area, fill a container of whatever size you want halfway (or a little more) with some apple cider or fruit juice of your choosing, and add some run-of-the-mill bakers yeast. It will give a week to 10 days (at the very most) of co2 to the space, and as a general rule the more yeast you add the faster the fermentation will be, and the higher the concentration of gas.
In the end a byproduct of this co2 supplementation for the gals leaves you with a rough apple wine/hard cider to enjoy as is or bottle and refine, or you can inoculate the fermented juice with some ACV Mother to make some great vinegar for the kitchen.
Of course just a light sugar, water, and yeast solution can work too, but fruit juices have a lot of nutrients for the yeast too so you would get a more efficient and thorough fermentation, and ultimately a more complex set of flavors and a more robust and beneficial microbial colony that would be a great addition to anyone's diet (particularly with the vinegars, but also if the fermented solution is refined into a refreshing beverage).
As for co2 concentration, I don't personally worry about it too much using this method, but no doubt some formula could be developed in which given amounts of liquid with given sugar concentration with the addition of a given amount of yeast will ferment over a given number of days to provide a predictable amount of co2 - no doubt such a formula can be found somewhere in the vast ambit of weed forums.
Some growers will find this approach to be aggravatingly imprecise, but it comports with my personal journey away from the modernist impulse toward total authoritarian
control, to a more organic approach aimed at
facilitating environments in which the gals can thrive, and in some sense have a kind of "say" in the matter of their own existence and development. I'll leave this latter point at that to avoid derailing the thread along philosophical lines.
Again, really great looking plants, and thanks for sharing your process!