Cheap home-made C02

Pliskin095

Pliskin095

Well-Known Member
Hi all,
i wasn't sure if someone has already written a thread about home made C02 so here it goes, to make home made C02 you will need :- Bakers yeast, Sugar and tap water.
To begin you can use an empty drinks bottle (i use a 1.5 litre bottle), fill it with 3 quarters water and add Bakers yeast (powdered or solid) i use solid as you can get it from most bakeries free, and add 2 teaspoons of bakers yeast or 1 packet of powdered yeast and add 2-3 teaspoons of sugar and screw the lid on (its important that the lid is air tight) and leave it for about half an hour, once it has been left alone for half an hour go and give it a shake and hopefully you should be able to see bubbles in the bottle.
Remove the lid and make a hole in the centre of it (approx 1-1.5 cm) and screw the lid back on, there you go you now have home-made C02 just place the bottle below you plant pots, after 7-10 days the process will have to be repeated from scratch.
Hope some will find this useful
Peace out
Pliskin095
 
R

RedGoblin

Well-Known Member
I'm curious as to whether or not the results would actually be significant-enough to justify the amount of work, albeit a small amount.
 
FilthyFletch

FilthyFletch

Mr I Can Do That For Half
In a very small area it might help some what but 5 gallon buckets setups work better. And for actual results as much as double yeilds you have to have and monitor the ppm levels in the 1200-1500 range using co2 generators or co2 injection tank systems.
 
ThinkingGreen

ThinkingGreen

Well-Known Member
Rumor has it, You can just keep supplying the yeast and water with sugar, and It can potentially stay alive for any duration. So, with that being known, I'm going to set this beast up in my PC box........... Now.
 
Joker209

Joker209

Well-Known Member
With the following mixture you get 200-300PPM increase per bottle.

1 2L bottle
1L WARM water (80-100*F)
1tsp yeast (ANY WILL WORK)
1cup sugar

I used an oxygen tube and electrical tape to guide the CO2 where I wanted it. I will post pictures soon enough :D And yes this has been posted already by xxninjaxx. Cheers for the contribution to the thought and I will still +rep you for the thought.

I forgot to mention and answer the questions before their asked.
It will emit 200-300ppm for 7-10 days.
Using a balloon on the top is also an option, just use a needle (while the balloon is un inflated) and puncture a part near the top.
Yes, fans help move the CO2 around the room.
Warm water is what activates the yeast.
Too much yeast will emit more CO2 BUT will last less time, so there really is no reason to use more than what I posted.
To test (using a tube) if your CO2 generator is still emitting properly just place the tube into a glass of water and shake the container. If you can count more than 10 seconds between bubbles I would suggest changing the mixture out.
To test (using a balloon) if your CO2 generator is still emitting properly shake the bottle and the balloon will inflate. If the balloon doesn't inflate to a moderate circumference.
You can use a double lock bubbler for brewing to make sure your CO2 generator is emitting properly.

I will post a couple pictures of 1 of my bottles.

http://imgur.com/idxdn.jpg
http://imgur.com/GQfWd.jpg
 
S

Spudz

Member
I've been using this method for added CO2 for over a year now,with great results in yield,growth time,health of plants etc. One thing I might add is CO2 is heavier than oxygen so I try and make sure my bottles(yeast,sugar and water) are over my plants since CO2 will be "dropping" when coming out of bottles. I use tubing strung above plants,with holes cut in it every inch or so to make all my "babies" get a good,equal dose of CO2. Also I like to make sure and give it a stir right B4 my "daylight"(lights on) starts because light is what 1st triggers photosynthesis(which is the main reason/use of CO2) and is in strongest need at 1st light.Especially in the flowering stage. I use it in all stages, but make more/stronger batches during flowering.BIGGER BUDZ,and faster growth rate. Hope u enjoy....Spudz
 
MASS97

MASS97

Active Member
ThinkingGreen said:
Rumor has it, You can just keep supplying the yeast and water with sugar, and It can potentially stay alive for any duration. So, with that being known, I'm going to set this beast up in my PC box........... Now.
Click to expand...
In a sense you're right. Although, I wouldn't just keep adding sugar water.
The process is called fermentation. The yeast eat the sugars and release CO2 and alcohol as by-products. Eventually the alcohol content reaches a high enough level that the yeast either go dormant or die off. Without removing the liquid on top of the yeast there will still be a high percentage of alcohol and the yeast won't perform as well in subsequent runs. You can use the old yeast as a starter for new sugar water. Either pour off the old liquid (and alcohol) and add new sugar water to the yeast bed, or scoop out some yeast and add to a new bottle of sugar water and keep it going that way.
 
Ronjohn7779

Ronjohn7779

Well-Known Member
This would make a very nominal amount of CO2. Most likely it's not worth the time and effort. It wouldn't shock me if your plants themselves released more CO2 due to the natural process of cellular respiration that nearly all life on earth does (just like yeast).
 
DirtPoor

DirtPoor

Well-Known Member
I really like this idea, I mean it can't hurt it with such a small amount. I'm gonna do it on my next grow.
 
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