Opinions and experiences with homemade CO2 …
Is it good or bad
How long
Light cycle or also dark cycle
How many ppm
How often to inject CO2 and when not to
Excess CO2
Faster or slower metabolism
Thick or small leaves
Questions
Help Grower friends
I use the exhale co2 bags as a supplement but don’t think they’re big producers of co2. I don’t measure it but the bags last about 2 grows for $30 so I figure why not
And have you seen any difference, any bushier growth, fatter, denser buds perhaps?
I’m not the best at keeping track of improvements but I would say my grows have gotten better since I’ve added that bag. I’ve also learned a lot more so can’t say with certainty. If you can afford it, it’s worth trying for sure I’d say
homemade CO2 factory… alcohol byproduct CO2 filtered through water pushed into the grow room, all by itself… however not my idea, just adopted from our good @snAke
Super cool.. and have you already noticed changes regarding pistil production or bud density, or thicker stems or leaves, like a shinier, green, and thick waxy color? I don’t know, maybe some opinion or difference between using CO2 and not using CO2, because I have the same system, a one-liter bottle for the bubbling water and another 6 L bottle for yeast fermentation with sugar. But it looks super cool, I use it with IV tubing because I think the thick one didn’t handle the pressure, right?
This is basically the same but without water filter. The only problem I have with it, is not having any control over the ppm.
A hermetically sealed grow room is da biggest thing missing 
But CO2 should help.
Just remember about respiration, when plants produce co2 and require oxygen instead.
Again, Im pretty inexperienced witt this stuff.
Oxygen is required for respiration 24/7, which does produce CO2, but doesn’t produce the volume required for photosynthesis during lights on . . . a net consumer of CO2 so we may want to supplement.
Photosynthesis requires CO2 and produces more than the volume of oxygen required for respiration 24/7 . . . a net producer of oxygen.
someone like me would just read carbondyoxide for every chemical and missinterpret
I bought this setup. It’s difficult to use I loose half the CO2 before I can get the cap on. The best I can do is get it to last two days. But baking soda and Citric Acid mixed in water will make CO2. Safety glasses are a must. You should be able to buy these ingredients in a grocery store or Walmart. I bought mine on Amazon.
I don’t use it because it’s too much of a pain in the ass.
Well, reading all your comments and opinions, I would like to share my own experience.
The truth is, it’s notably a rapid growth, greener leaves, and they seem to have a different sheen than when CO2 is not used. The leaflets are wider, meaning each leaflet of each leaf is somewhat wider and has a waxy sheen. It’s also true that it grows a bit faster, it could help with about a centimeter per day of growth, I’ve noticed it and I do have photos that prove it. My recipe is:
One 6 L bottle for the mixture
4 L of water and 2 L of air
One 1 L bottle for the bubble trap
And an air tubing system, like those used for serum that can be bought at pharmacies, so there can be an outlet during nighttime hours when CO2 is not needed.
Yeast: 14 g of yeast, 5 g of baking soda, and 1000 g of brown sugar.
The speed of growth as well as the waxy and shiny leaves, and I have also noticed that when CO2 is used and the plant likes it, the leaves form in a panel shape. Since I stopped using CO2 due to substrate issues (as I use organic Levin soil), and because the plant demands more food thanks to CO2, I started noticing very yellow tips, meaning it wasn’t finding enough food at the speed it could generate.
So I decided to remove it and reintroduce it just today, as the stretching phase is ending, so it can concentrate its maximum splendor on the creation of pistils and the fattening of buds itself.
I also notice that humidity rises a lot when using CO2. I have a 40x40x120 tent, which helps me enclose the CO2. I also have difficulties measuring the amount of CO2 in the cultivation area, but as long as there are no signs of intoxication or stress, I keep maintaining it. Generally, I use the closed tent, turning off the intake fan and exhaust fan to make better use of the CO2.
So yes, I recommend using this recipe; it’s splendid, incredible, and will give you many good results in my opinion. Now my next idea is to place one six-liter bottle with my current recipe, and once a week passes and CO2 production decreases a bit, incorporate a second six-liter bottle so that the CO2 doesn’t diminish and the plants remain well-fed and can generate many more flowers.
In this case, for abundant pistil production, I use a wild genetic harvested by myself.
Which was a female plant pollinated by an unknown male.
Yes, definitely, the ladies started generating new leaves non-stop, and the green was much more intense than before. The flowering ladies also seem to have gotten a boost, as the flowering
I’m on day 9 of flower and started using CO2 yesterday day 8. I’m using the ACI setup with a food grade CO2, and I made the diffuser myself out of a drip line it’s laying on top of my light. I’m running the CO2 for 8 hours a day. Yesterday I turned the exhaust off and had a RH of 82%. Today I added a humidifier and had the exhaust set to 3. The RH in the room where the tent is 56%. Today I’m going to clean my intake filters to see if that will help out on the humidity. I have 5 plants in there and they are transpiring a lot. So far they seem to be liking the high heat and humidity I have my light turned up to 80%. I’ve been looking into using CO2 on Reddit and some people are saying that the quality of their weed has gone down with CO2. And they recommend to stop using it the last few weeks of flower. My RH is pretty good when the exhaust is running on level 8. Will see how it goes when I defoliate next week. I might only run it for the first 4 or 5 weeks of flower. I’d rather have less quality week then a lot of miss.