The Planted Tank Forum - View Single Post - DIY CO2, how much water?
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post #8 of (permalink) Old 12-18-2011, 07:59 PM
Algae Grower
Join Date: Nov 2007
Location: Evansville, IN
Posts: 6
Originally Posted by jstehman View Post
I doubt that your DIY C02 will build enough pressure to go through a diffusor disk. Better try a bubble ladder or diffuse through a powerhead.

Fill a 2L bottle 1/2 full of lukewarm water. Add 1 to 1 1/2 cups white sugar. Shake until dissolved. Fill water to 3/4 full with lukewarm water. Water temps over 70 will kill yeast . Add 1/2 to 3/4 teaspoon yeast. Shake again.


You want it to be a slow, steady reaction. Too much yeast or sugar will result in increased c02 production but reduced duration.
Water temps over 70 F will not kill yeast. Many baking recipes call for water between 100 and 120 F.
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