What is the most efficient and cheap way to provide CO2 to my plants?

BrandonT

BrandonT

Well-Known Member
what i hear but i wont be able to always do that, and how effective is that anyway is the co2 we breath out really that much or what
 
A

Adam hall

Member
Put about five or six cups of sugar in a clean one-gallon plastic jug. To this add about a half gallon of water. Mix until the sugar is dissolved and add a little bit of active yeast. Poke a small hole in the lid and replace it on top of the jug. Once a day, or as often as possible, shake the jug to thoroughly mix the contents. In a day or two the yeast will begin to grow and CO2 gas will be a by-product in the jug.

Once the yeast begins to grow, the shaking of the contents will produce a gaseous eruption through the hole in the lid. On its own, the device will slowly produce CO2 as long as there is enough sugar in the mix and the yeast stays active. The daily shaking stimulates the mix to produce a surge of CO2 gas. Therefore, the more times the jug is shaken, the more surges of CO2 that will erupt into the room. The mix will need to be changed or refreshed every two to three weeks. I have found this system to be more than adequate and perfectly safe for smaller grow spaces (twenty square feet or less). It is also very inexpensive to configure and maintai
 
Mikov

Mikov

Member
smoke with your ladies, sing with them, talk to them, breath on them.

here ya go, https://www.rollitup.org/newbie-central/8383-need-help-co2-vinegar-baking.html

and i did a quick google search. at rest you take about 12 breaths a minute, size of a breath is about 500mL, each exhale isn't 100% co2, only about 4%. so per breath you create about 0.04 grams of co2. it's weird i wouldn't think you measure a gas in grams but it is a heavy molecule. 0.04 x 12, so at rest you make half a gram of co2 per minute. 2 minutes makes 1 gram of co2. i'm just paraphrasing i'm not sure how much a sugar setup would make.
 
LEDGrowKing

LEDGrowKing

Active Member
Adam hall said:
Put about five or six cups of sugar in a clean one-gallon plastic jug. To this add about a half gallon of water. Mix until the sugar is dissolved and add a little bit of active yeast. Poke a small hole in the lid and replace it on top of the jug. Once a day, or as often as possible, shake the jug to thoroughly mix the contents. In a day or two the yeast will begin to grow and CO2 gas will be a by-product in the jug.

Once the yeast begins to grow, the shaking of the contents will produce a gaseous eruption through the hole in the lid. On its own, the device will slowly produce CO2 as long as there is enough sugar in the mix and the yeast stays active. The daily shaking stimulates the mix to produce a surge of CO2 gas. Therefore, the more times the jug is shaken, the more surges of CO2 that will erupt into the room. The mix will need to be changed or refreshed every two to three weeks. I have found this system to be more than adequate and perfectly safe for smaller grow spaces (twenty square feet or less). It is also very inexpensive to configure and maintain
Click to expand...
Came here to recommend this.

Be sure that your grow room is relatively sealed if you are going to do this. If you have a fan pumping air in/out, then the CO2 adding won't really do anything. Also, CO2 will up your PPM. If you are giving CO2, your chance of nutrient burn rises. The yeast method usually won't run into this problem, but keep it in mind just in case.
 
BrandonT

BrandonT

Well-Known Member
another quick question with the yeast method if i use a large 3 gallon container or something of the sort will i even have to put ventilation in at all? or will the yeast create enough c02 that ventilation isnt neccisary, or is there another thing that ventilation also helps with
i have a 240 cfm inline fan for my light but other then that there wont be any fans going if i dont need them
 
LEDGrowKing

LEDGrowKing

Active Member
Don't put it in a sealed container, the generated CO2 will create pressure and can bust it. The CO2 needs to have a way of getting out of the container.
 
mntman36

mntman36

Member
Ive been using sugar and yeast for a year now and produce perfect ppm during vent fan off time to justify doing it
over and over again, when vents come on all is gone but shake it up and levels will rise fast again i assure you...

Also recomend poking hole in lid, then runnin a clear tube (fishtank tubing) about 12" long and just insert one end about 1/2" in lid,
then lay tubing on table or hang near circilation fan???? but the tubing will keep little critters from getting in your mix, also note that when the yeast has eaten all sugar in container, empty water carefully, then 2 cups sugar right back in to jar until there in no yeast left, I get 2-3 times per pack of yeast....
 
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