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post #1 of 16 (permalink) Old 08-22-2006, 12:27 AM Thread Starter
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DIY CO2 question.

Hi,

I have the standard DIY CO2 setup

2 ltr bottle, airline tubing, sugar, water, yeast..

My question is, is there an exact type of yeast that I have to use? My father works at Kraft Foods, and was able to snag me some yeast. It came in a little white packet and all it has on it is "Yeast" My dad couldnt tell me any specifics on it. It is basically powder. Well my DIY CO2 has been setup for about 2 hours and I have not seen any bubbles at all.. Will it produce CO2 bubles consistanly or just like a bubble here, and a bubble here? To seal the cap with the air line tubing I used model cement glue. Mabey I just have a break in the seal, or mabey the model cement glue isnt cutting it? My procedure for setting it up were as follows.

1. Pour boiling water into empty 2 litre pop bottle to kill germs.
2. Add warm/hot water to the bottle, leaving about 3 inches of empty space at top.
3. Add two cups of sugar and shook bottle till sugar disolved.
4. Waited about an hour for the water to cool down.
5. Added 1 tablespoon of the yeast. Shook up to dissolve in sugar water solution
6. Hooked up to tank. Didnt hook up to power filter or diffuser yet because I just wanted to make sure it worked..

Did I do anything wrong? I have not seen any bubbles what so ever yet. I am thinking either it is a wrong type of yeast, or it is dead already. Any ideas?

Fishboy
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post #2 of 16 (permalink) Old 08-22-2006, 12:35 AM
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It could be that the water was too hot and killed the yeast, it is the wrong kind of yeast, there is a leak, or you need to give it a little more time. I use saf instant dry yeast, it is a beige color and more granular than powdery. I've dried the boiling water technique, but it yeilded the same results as warm tap water. I start mine at night before I go to bed and it is bubbling by the morning. Hope this helps.
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post #3 of 16 (permalink) Old 08-22-2006, 12:47 AM Thread Starter
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I don't think it is the water that killed the yeast because like I said I only used warm/hot water to mix the sugar in, and then I waited an hour and the water was room temperature.

Am I using the right amount of yeast in contraction with the amount of sugar? Do I dissovle the yeast or just top it off? I am going to Leisure Time this week sometime to see what kind of yeast they sell because they sell brewery kits, and I am looking for yeast that has the same effect. I will check the grocery store for the yeast you described. Thanks for the help!
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post #4 of 16 (permalink) Old 08-22-2006, 12:49 AM
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1 tablespoon of yeast is alot. I would think it would be roaring in about 2 minutes

I use 4 cups of water and 4 cups sugar in my 2ltr bottles and a teaspoon of yeast and it is generally kicking out in about 15 minutes

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post #5 of 16 (permalink) Old 08-22-2006, 12:55 AM Thread Starter
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Mabey its the wrong kind of yeast then or its dead. I havent even seen any bubbles within the bottle. I will look around for some different kind then. Thanks!

Btw, how long does yours live for?
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post #6 of 16 (permalink) Old 08-22-2006, 01:30 AM
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Couple three weeks average

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post #7 of 16 (permalink) Old 08-22-2006, 01:34 AM Thread Starter
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Can you see the CO2 inside the bottle (making bubbles under the water) Or do you only see the bubbles in the tank?
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post #8 of 16 (permalink) Old 08-22-2006, 01:35 AM
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if you remove the cap you should hear them

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post #9 of 16 (permalink) Old 08-22-2006, 03:05 AM
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I've been using champagne yeast, purchased from a brew supply store in my Hagen canister. Sugar, then 1/4 teaspoon of yeast, and 1 teaspoon of baking soda. I use a digital thermometer to get the water to 100 F, then just pour it in. I get about one bubble every 3-4 seconds for 2-3 weeks. Good luck

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post #10 of 16 (permalink) Old 08-23-2006, 01:49 AM
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Quote:
Originally Posted by fshfanatic
1 tablespoon of yeast is alot. I would think it would be roaring in about 2 minutes

I use 4 cups of water and 4 cups sugar in my 2ltr bottles and a teaspoon of yeast and it is generally kicking out in about 15 minutes
Im trying this method right now, the past recipes ive used didn't even work not even for a day or a few minutes. I hope it works.
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post #11 of 16 (permalink) Old 08-23-2006, 02:04 AM
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I dont boil the water, just use hot tap water. Disolve the sugar by shaking the bottle. Then pour in the yeast, cap it and let it sit.

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post #12 of 16 (permalink) Old 08-23-2006, 08:54 PM Thread Starter
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I went to the store and bought some Red Star yeast. It seems to work great. I have used 4 cups sugar and 1.5 teaspoons of yeast, its roaring and I am getting about 2.3 bubbles per second. I plan to change it often, I just need more C02 in my tank.
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post #13 of 16 (permalink) Old 08-23-2006, 09:11 PM
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No need to change it that often. About once a week open the cap to get O2 in swirl it and cap it back up.. It should last a couple weeks, easy.

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post #14 of 16 (permalink) Old 08-23-2006, 09:19 PM Thread Starter
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Alright, thanks, I will keep an eye on it. I planned to have it last about a week minimum so I guess thats good news!
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post #15 of 16 (permalink) Old 08-24-2006, 07:02 PM
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WOW 100 F !!! I use a meat therm and always try to get it to 86 F like the label on the Hagen canister says.
I was under the impression that using to Hot a water would kill the yeast.

Dan



Quote:
Originally Posted by otter View Post
I've been using champagne yeast, purchased from a brew supply store in my Hagen canister. Sugar, then 1/4 teaspoon of yeast, and 1 teaspoon of baking soda. I use a digital thermometer to get the water to 100 F, then just pour it in. I get about one bubble every 3-4 seconds for 2-3 weeks. Good luck

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