DIY c02 mixture did not work for me - The Planted Tank Forum
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post #1 of 7 (permalink) Old 02-17-2004, 12:19 AM Thread Starter
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When i set up my DIY c02 in the 2 liter bottle.. nothing happened even after 4 hours nothing was happening then i checked in the morning no pressure.

1/4 tb yeast
2 cups sugar
warm not hot warter to the curvatuere of the bottle

Any reasons why?
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post #2 of 7 (permalink) Old 02-17-2004, 03:05 AM
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leaks, bad yeast

Proof the yeast -- add to water, let dissolve, add a bit of sugar, watch for slight foaming

If the yeast is good, submerge the generator under water, watch for leaks
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post #3 of 7 (permalink) Old 02-17-2004, 04:57 AM
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try using cool (not cold) water once and wait several hours-1 day+. I've heard that warm/hot water can kill the yeast. Not sure if it is true, but I use cool water and mine produce co2 fast

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post #4 of 7 (permalink) Old 02-17-2004, 01:15 PM
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If the water is less than 115 F then the yeast should be fine. Over that things get dicey, I always put the yeast in first and then the sugar and pour the warm water onto the sugar. It cools it enough to keep the yeast from being wiped out.


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post #5 of 7 (permalink) Old 02-17-2004, 03:18 PM
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here's how I always did mine. I put in warm awter and sugar to get that dissolved. Then I add cold water to get it to the right temp. usually just a little cool to your hand works. then add the yeast. I have this going on the 10g in the bedroom and used in on the 38 before I went pressurized. Worked like a charm.
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post #6 of 7 (permalink) Old 02-17-2004, 10:17 PM Thread Starter
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No i dont think it was the yeast or recipe im thiking its my room temp.. my Dad keeps the house at 69 % :?
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post #7 of 7 (permalink) Old 02-17-2004, 10:27 PM
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69%, you mean F right? my house is at 65F and I get very good CO2 production with the same recipe you're using. The water temp you used was warm, perfect, it should be working. Also give it at least 24 hours to start, thats how long mine takes.

99% of the time it's leaks. Submerge the whole setup in a bucket of water and check that way...The best way to be leak free is to drill a hole smaller than the tubing, cut the tubing at an angle, and pull it through with some pliers.
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