Ok so this is a very basic and cheap way to keep your plants healthy and well fed. Things that you will need:

2 liter bottle
package of yeast
tubing (aquarium tubing works well)
sugar
water
nail (or another poking device)
hammer
sealant






First off you want to clean the bottle out and then start with making a hole in the top of the cap. I make two holes here for multiple plants. If you dont want to use two holes you can buy a splitter for the tubing at the hardware store. I wouldnt suggest using one bottle for more than two plants.




Next step would be to insert your tubing



now put about 2 cups of sugar into the bottle



and then the yeast





next fill the bottle about half full with water a little warmer than room temp.
and give this whole solution a good shake until its mixed up throughly.




now place your cap on the bottle with about 2 inches inside the bottle




the next step is optional. You can either cover the bottle or not but keep in mind that yeast works faster in the dark which means more CO2 but this also means more sugar consumption. So this is a personal choice as to how often you want to add more sugar and water. This one bottle should last you about two weeks. Oh and a stupidity check here. The plants do not need Co2 when the lights are off so you can theoretically close it to save Co2. However when you close it up it will still create Co2 which given enough pressure will cause the bottle to explode. So please dont be cheap and blow your stuff up just go spend the 3 bucks to keep the yeast going

Place the tubes about 2 inches from your plant and watch the changes





Hope this helps you out. Have a great day and happy growing

i just posted the same rig on fogponics! nice work dude

This is an awesome addition to the original yeast and sugar CO2 tutorial. I always thought, well i dont want to just stick a bottle in there, but i will try this method cause it seems to use to CO2 much more effectively

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Oh shit, he's gonna spam me.....

thanks guys im hoping to write one up on my grow box now and the stealth pc box im working on now

hahahhahahah, Kroger, Dude I live in Texas too... We're all a bunch of pothead rednecks, ahahhahahah!!!!

Do you guys think it would have enough of an effect to run this if your extract fan is sucking twice the volume of air in the room in one minute?

no man this set up wont help you at all. you are going to have to use an actual co2 tank with a regulator.

So what finally made you go this route?? Different assumptions from different experience growers?? I was all set with my 2 liter bottle with my tubes and everything...

i dont have much air exchange in my box so there is less co2 movement. thats why i added co2 if you put the co2 close to the stems it should help even with your strong fans. but it just may be more wasteful so i would only use 1 bottle per plant if you really want to see major improvement.or you can give the plant some time with the fans off to get extra co2 but that depends on how hot your grow is.

Its my understanding you should have the exhaust fan off when the co2 is flowing. Thats why a controller is so helpful. Plus the plants like it a bit warmer when you bump up the co2. So again the fan should be off. I do like your idea and I think it would work great for a small grow. good tip.

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