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Old 09-10-2006, 01:36 AM   #1
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DIY CO2 Question once again, LOL

I can't get my DIY CO2 to go, lol. I've tried everything, 1G jugs, now 2L bottles, etc. I used approx 2 cups sugar, 2 TSP molasses, and 1/8 TSP EC-1118 Wine Yeast I got off Ebay from a Ebay Winery store. I decided to try it, as it's got one of the higher alcohol tolerances. But the most I got out of any of my tries was about 3 days.

As for the temps, I've tried really warm, luke warm, tank temp (approx 80-81), and cool. I made several attempts but do not know why I can't get it to work. I've tried with and without baking soda as well. And I just started trying with the molasses added, still nothing. It takes a day to start, and then it's real slow, then fizzles out after 2-3 days. I just don't understand. I know it's not a leak, as I have everything good now. When it fizzles out, and I put a cap on the bottle, it doesn't even build pressure unless I give it a good shake, then stops after a couple minutes. I've also tried regular baking yeast from Safeway. What could I be doing wrong? Each time it stops, I let it sit a good week to make sure, and after a week, doesn't even fizz when shaken.

Edit:
Just so you know my water parameters from the tap. Both kh and gh are 60.
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Old 09-10-2006, 02:14 AM   #2
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hum, well my recipe is

2 liter bottle
1/4 tsp yeast (bakers yeast)
2 cups sugar
1 T molasses
2 tsp dried milk

I make sure to disolve everything in luke warm water before I add the yeast.

So far it's been going strong for a week. But this is my first run through with the stuff. I think it was Red Star bakers yeast that I'm using.
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Old 09-10-2006, 02:31 AM   #3
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That is the original yeast I used when I first started trying. Then I went to another from Safeway, and now Wine yeast. I don't know if it's just something in the water, like chlorine? Chloramine? Anything else that would affect yeast?
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Old 09-10-2006, 02:34 AM   #4
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I don't even treat for chloramine/chlorine when I put the yeast in so I doubt that would be it.

Might be worth a shot to throw some prime in there, or take water from your tank to make the mixture.
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Old 09-10-2006, 02:38 AM   #5
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If this time doesn't work, I just might try water directly from my 75G. Sounds like an interesting thought.
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Old 09-10-2006, 11:25 PM   #6
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on my hagen co2 bottle it specifically says do not use aquarium water. i dont know why not but thats what it says. there must be something specific in yuor water casue in to fizzle out. this is my reciepe in a 2 litres bottle...
2 cups of sugar
1/2 tbs of normal bakers yeast(fleichmanns)
fill with water.

i get 2 cups of boiling water and pour in the 2 cups of sugar. then stir a little. this completly dissolves the sugar in like 2 seconds. then i add 2 cups of cold water to balance the temp. pour it into the bottle but leave about 1 cup in the measuring cup. i add my yeast to that remaining water and mix the crap out of it. this helps jump start the yeast since there is ugar in that water. i mix it for a few min then add it to my bottle. then i fill the rest up to the neck of the bottle. it is going with 20 min and will go for about 2 weeks pretty strong. i use alot of yeast casue i wnt alot of co2. i dont mind changing out the mixture more frequently since i am getting better levels. try the tank water and if that doesnt work..... go pressurised lol.
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Old 09-10-2006, 11:30 PM   #7
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If I were to go pressurized, then I'd need a manifold for the 10G tanks. Question is, is 25 feet away too far to run a CO2 line? The 10G tanks are about 25 feet apart. I could place the CO2 bottle next to one of the 10G tanks, but the other is a ways away. Would it work, or would I need a different type of line to go the distance, like a metal airline or something?
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Old 09-11-2006, 12:27 AM   #8
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i think the main problem would be pressure. the co2 will take the easiest path. therefor u would be getting very different amounts in each tank. unless both lines are the same length and submerged the same distance. i may be wrong though...
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Old 09-11-2006, 02:12 AM   #9
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Yes, but you can use airline valves, and if too much is going one direction, you can close it off some til both are the same. That's just one way. The other way is using a manifold. Then each line is it's own entity.
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Old 09-13-2006, 06:49 PM   #10
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A couple more possibilities.

Bad yeast. This is a bit less likely since you've tried multiple sources with the same poor results.

Air temp too cool. Cooler temps slow down the CO2 reaction and decrease the amount of CO2 being produced. Placing your generator bottles in a bucket of water with a heater is a way to solve this problem.

If you do go with pressurized, how about putting the CO2 bottle half way between the tanks so that you don't have quite as long a distance for the CO2 to traverse to either tank?
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