DIY Co2 pure Co2? - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 04-03-2006, 12:11 AM Thread Starter
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DIY Co2 pure Co2?

guys i was wondering for a DIY co2 using yeast how much percentage does it contain co2? i do believe it is not pure co2 right?
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post #2 of 3 (permalink) Old 04-03-2006, 12:29 AM
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As far as I know it (the gas portion) is as pure co2 as you would get out of a welding shop.

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post #3 of 3 (permalink) Old 04-03-2006, 01:19 AM
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You can't get gas from a mixture with water in it without having some water vapor in the gas. Also, you can't get gas from a mixture with alcohol or any other substance with a vapor pressure without having some of that substance in the gas. When you smell the bottle of yeast/sugar/water you don't smell any of those substances as much as you smell other organic compounds - they are also mixed in with the CO2 coming out. But, I will bet that the gas is 99% CO2.

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