co2 DIY generator

i did it some five years ago now i suppose... yes it will add co2 but unless you are going with a large system, 5 gal bucket at half capacity or greater it doesn't contribute enough co2 to be cost effective and it is time consuming and it will give off a fermenting smell as well! a much better solution is a "EXHALE" mushroom bag... hang it and forget it... and the extra large will work for up to six months in 6x 6x 80 tent... so much easier... i get mine at my local grow store but i am sure you can purchase them online... hope i steer you in the right direction. happy gardening

Chances are if you're looking to go cheap on CO2 injection then your setup isn't really optimized for it anyway. The amounts you'd have to use combined with the inefficiency of the method will negate any precieved savings compared to just getting a tank and regulator and just doing it right. If you're like already a home brewer or something and you're just looking to try it for giggles off your brew bucket fine but I wouldn't waste my time.

Ultraviolet really hit this one on the head. If you absolutely must, get a garden pressure sprayer. Get vinegar and baking soda and one of those protein mixer shaker whisk balls. Mix some up, close that lid quickly, and shake. Let the reaction occur for a moment then pump to pressurize. Then cut your exhaust fan off in the tent. Shove the nozzle into a ducting port in the tent and blast away. Congrats, you've just successfully doped your tent for one instance with CO2. Now you have to change the exhaust back as soon as you are ready, clean your mixer from the effluent streams (water and whatever input wasn't limiting), and get ready for the next day. Most "home grow" solutions for CO2 are rip-offs or jokes. Mushroom bags are just as hygienic as living soil indoors, yeast derived CO2 is about as silly as you can get (this is a parameter you're likely not testing your crop for but that is present and would be required to be low in any dispo. setting), and tanks are not needed with the added potential of being dangerous without a system of checks and balances when used indoors. If you utterly optimize every single parameter possible for your plants, then AND ONLY THEN does it remotely make sense to be flooding the room with CO2. Even then, the room is going to be setup to drastically change the exhaust settings when being flooded and while sitting saturated. The research I follow has demonstrated that CO2 is completely a meaningless parameter to even attempt to improve unless you're trying to push higher than a typical DLI, then plants require CO2 to be higher. If you're indoors your house is not hermetically sealed. These small gaps seep air into the home as your HVAC system runs typically. Get a CO2 meter and you'd see that indoors in a house typically the same as outdoors. Turn air over regularly and you'll never experience CO2 as a limiting factor IME.

CO2 boost from yeast and sugar is a pipedream, it doesn't do anything. Adding CO2 outside of a highly controlled closed-loop system is a waste of time and money, forget about CO2 and get more light and better genetics instead :)

The best option for control of CO2 and constant levels is a CO2 tank with a monitor and automatic controller valve. I would not fuck around with any yeast and sugar its just messy and does not yield the same results its always up and down in concentration in the air and below par. Be sides all this. Most if not all home growers do not need CO2, CO2 levels in the home are already elevated by a small amount, its also the last thing you want to do to improve your grow. Meaning you want everything else on point and locked in before adding CO2 as its only beneficial to you and your wallet if everything else is working right. The plant can take in more light, feed and water when CO2 is maxed out sure, but you need a sealed grow room or your just venting it all away. Most users do not have this, and if your venting into your own home you do not want to be living in a environment with higher levels of CO2, asking for issues. In short don't do it. Same goes with all the exhale bags and such, they seem like a good option but the levels of CO2 they supply is not great and kinda low like 100-200PPM vs 2000-4000PPM and end up costing you way more vs just getting a CO2 tank and controller setup.

Co2 not needed at night, tent builds surplus over night, have a specific time of day for oversaturating with high light intensities. No more than 4 hours. Yeast works well with sugar, but it's more a slow release over time. I found vinegar and baking soda far more reactive will burn out much faster but can keep 2000ppm for a couple hours, that's all you really need. Not too cheap either having to reload every daY, no point using co2 if your not trying to push limits of growth. Under typical conditions with a carbon dioxide concentration of about 400 ppm, the optimal growing temperature for weed is about 26-27°C (78-80°F). However, at CO2 concentrations above 1,000 ppm, plants can grow as high as 96°F (36°C), where photosynthesis peaks. Hood lucking holding vpd. 😆

It's a good idea not sure if you will get enough co2 from that to make a difference. I doubt it. Can get full system and refill can for £50.. search.. airbombz co2.... Nice cheap easy bit of kit with remote control and timer... Hope this helps...