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Old 01-05-2013, 04:43 PM   #1
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DIY co2 not making bubbles yet?

So I just made my diy co2.

2 cups hot water
2 cups sugar
1/4 teaspoon yeast
1/4 teaspoon bakingsoda

I mixed it all up, put it in the 2L Bottle, not doing anything. Yeast is just bought from the store.

What did I do wrong?
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Old 01-05-2013, 04:49 PM   #2
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DIY co2 can take as long as 24 hours to start bubbling. If you don't see bubbles after 24 hours you may want to make sure all the bottles are closed super-tight, and there isn't any room around the tubing that the co2 can escape through.
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Old 01-05-2013, 04:53 PM   #3
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There's not any space. Getting the tubing through the hole in the cap was next to impossible

But I will wait till tomorrow and see if it is bubbling.
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Old 01-05-2013, 07:53 PM   #4
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you might not see any space, but even the tinest tiny hole can leak CO2 and that's enough to put the efficienty of your bottle to zero. I had to seal one of my bottlecaps with silicone.

the way i test the bottlecaps is to place water around the tube, where it goes into the bottlecap using a syringe (that way, you get a nice amont of water on the bottlecap and not the floor).

i then press lightly on the bottle, if bubbles are seen, it's time to reseal it.
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Old 01-06-2013, 03:15 PM   #5
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Just chiming in to agree with the seal. Do you see the bubble or mucky foam on top of the reactor? If so it is a seal issue.
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Old 01-06-2013, 03:31 PM   #6
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Agreed on the seal. Also, it shouldn't take 24 hours... it should take a couple hours at most... otherwise you have seal issues.

Also, I noticed you said you used hot water. Hot water will kill the yeast. You want to use luke warm to warm water. I realize all of that is relative... so somewhere in the high nineties seems to be good.
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Old 01-09-2013, 07:14 PM   #7
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I have to reapply the silicone every couple of weeks to maintain the seal
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Old 01-09-2013, 08:08 PM   #8
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Alright. They silicon STILL isn't dry yet, I think beause my room is cold, it's in the basement. In a little bit I will take it upstairs, re-do the mix after I put some more silicon everywhere and let you guys know what happens. Thanks
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Old 01-10-2013, 03:30 PM   #9
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You want the reaction to occur at relatively warm temperatures. I don't know the exact range, but if you try to let yeast work to rise bread dough, it ain't gonna happen in a cold room. The problem may be that your room is too cold for the yeast to be active. Try putting a heating pad (like for sore muscles) under or around the bottle and see if you see a difference.
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Old 01-10-2013, 05:42 PM   #10
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Well I just put a different silicon on, the last stuff never dried. This stuff actually did... I re-mixed the yeast and sugar, this time using warm water, not hot. In one of the bottles the top is a little foamy, is this a good sign?
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