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Reload this Page Cheap Way to make CO2 for your grow
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  #31    
Old 02-28-2009, 01:24 PM
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Originally Posted by JPEG View Post
When making this contraption for the co2 w/ yeast an sugar,,, what is the smaller bottle for,,the halved water bottle that the tube goes to the bottom of from the bigger 2 liter,,what is the purpose
damn, this is an old thread.

That would be an improvised airlock. co2 travels from the 2 liter through the tube to the open vessel of water(the halved water bottle could just as easily be a teacup), then the co2 escapes through the water surface but no oxygen can flow back through the tube into the 2 liter.

This is so the fermentation can take place. from a home brew website, "In the absence of oxygen, yeast will respire anaerobically and produce ethanol and carbon dioxide". If the top is simply open it will not work, something must be attached to let co2 escape while keeping oxygen from getting back in.

Just to note, an airlock made for a 5 gallon cooler jug costs about $2.50 at any home brew store.
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  #32    
Old 06-11-2009, 07:33 AM
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What does guest mean by "Fill the bottle with about a 20% solution of glucose (dextrose) by mass"?

Does that mean for a 2L bottle there would be a 400ml mass of powdered dextrose mixed with water?
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  #33    
Old 07-11-2009, 11:50 PM
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fantastic! honestly... great information! thanks!
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  #34    
Old 07-20-2009, 03:09 PM
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gonna give it a whirl - i have a 320 cu ft room - will a 2 liter bottle be enough and how expensive are 5 gallon glass jugs - thanx
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Old 07-21-2009, 04:39 PM
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hello , i been trying to figure out if you could use co2 but for the roots in my hydro bubble ponic set up i have, just like fish tanks use it for. has anyone tried this? i been trying to loook and read but i cant find any info or not looking in the right place. thanks yall.
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  #36    
Old 07-30-2009, 03:30 PM
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I have read that aerobic yeast respiration produces 3x as much co2 (and water instead of alcohol). so, why is there an air lock on this system. let the oxygen in!
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Old 08-06-2009, 12:09 AM
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I have read that aerobic yeast respiration produces 3x as much co2 (and water instead of alcohol). so, why is there an air lock on this system. let the oxygen in!
Where didju read that?
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  #38    
Old 08-07-2009, 09:46 PM
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Where didju read that?
I read that rightchere:

CO2 via Yeast The Right Way, With Calculations..

"There is also an aerobic mode that yields no alcohol, but 3x as much CO2 and baby yeast..
C6H12O6 + 6O2 -> 6CO2 + 6H2O + more heat..."
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  #39    
Old 09-24-2009, 10:47 PM
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I hate it when the posts stop......
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Old 10-17-2009, 03:57 PM
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Quote:
Originally Posted by weedyoo View Post
made one of these after seeing it on here in another post any way

you will need
5 gal bucket with cover
3 small plastic hoses
5 lb bag of sugar
yeast
if you want
fish tank pump
timmer
one of thoes fish rock that makes bubbles

ok drill 3 holes in cover just the size of your hoses as they need to be sealed.

four if you are using the fish pump. put all hoses thure the holes 3 inches glue or calk them sealed.

same for the hose from the fish pump,but this hose run the the bottom. this comes on in the day light hours it sturs the water making more co2.

now you run the 3 hoses up to the celling and down over the plants.

only thing left is to make the mix

fill bucket half full with water and 5lb sugar.

make yeast as the derictions say to. slap the cover on and wait. this last me one week. hope this helps.
weedyoo
A picture would be nice
 
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