DIY CO2 Formula?? - The Planted Tank Forum
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post #1 of 31 (permalink) Old 07-08-2006, 07:08 AM Thread Starter
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DIY CO2 Formula??

Im ready for the DIY co2 tomorrow, Active Dry Yeast is the type of yeast to use right, okay im confuse about the formula, one of the formula for DIY co2 said that the water would be up where the label of the soda ends. And the second formula said that it should be 2 cups of warm water http://www.qsl.net/w2wdx/aquaria/diyco2.html#6 , i dont know what to use, any input will be appreciated

And the water it should be boiled or can i just use the water on the faucet, or a bottled water that i can buy on a dollar store?

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post #2 of 31 (permalink) Old 07-08-2006, 04:49 PM
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There are lots of different recipes, so do a search on the forum to find more options. This is what I use:

1-1 1/3 cups sugar
luke warm tap water to where the bottle starts to curve

cover and shake

1/2 tsp yeast sprinkled on top

let it sit for a while before you hook it up

I usually add a few tbs of brown sugar--it seems to give it a boost. I also throw in half a baby vitamin, but I don't know if it really makes a difference. My tap water has high kh. If yours is lower, you may want to try adding a little baking soda.

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post #3 of 31 (permalink) Old 07-08-2006, 09:10 PM
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I do the same as the observant imp, except I use 2 cups sugar and 1/4 tsp yeast. This is for a ten gallon.
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post #4 of 31 (permalink) Old 07-08-2006, 09:47 PM
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Yoink--With more sugar and less yeast, what's your life span between changes?

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post #5 of 31 (permalink) Old 07-09-2006, 02:02 AM Thread Starter
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can i use 1.85 liter juice bottle right,? instead of 2 litter soda bottle, i want the juice bottle because of its wider cap, i think it will be more stable tha the soda bottle, how about the mixture is it the same with the 2 liter soda bottle?

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post #6 of 31 (permalink) Old 07-09-2006, 02:36 AM
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I use juice bottles. Just remember to leave a couple of inches of air space at the top.

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post #7 of 31 (permalink) Old 07-13-2006, 02:35 PM
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I use 1tsp of yeast and 2cups of sugar. I take the yeast and mix it with warm water in a sep glass cup, and then let it sit for 5-10min. Dont use hot water it will kill your yeast. Before you put the sugar in the 2 liter put boiling water in your 2lit bottle to kill all the germs, and then pour out and add warm water and sugar and shake well. Then add yeast. When I use this method I get lots of bubble in 30min. Good luck! P.S. fill the bottle to top were it starts to curve, or about leave 3inc gap from top.
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post #8 of 31 (permalink) Old 07-23-2006, 02:18 AM
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Lukewarm water will be sufficient. Regards, JC.
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post #9 of 31 (permalink) Old 07-23-2006, 02:30 AM
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I use this recipe:

2 cups sugar
2 Tbsp protien drink mix (like you get at GNC, I use vanilla, yummm)
1 tsp baking soda
1/3 tsp yeast


The protein drink mix gives the yeast a bit extra to eat and the baking soda buffers against the rise in pH as the alcohol content increases (high alcohol content slows down or kills yeast). This mix lasts upwards of a month going strong. I've tried a bunch of recipes and this is the best I've found. To be fair I haven't tried the jello CO2 yet though.


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post #10 of 31 (permalink) Old 07-23-2006, 04:53 AM
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I just used a 2ltr pop bottle and the following:

4 cups water ( there is about a 6" space of air at the top )
4 cups sugar
1tsp baking soda
1 tsp yeast

It is has been really kicking out the flow through a glass diffusor and has been for the last few days.

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post #11 of 31 (permalink) Old 07-23-2006, 07:33 AM
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1 gallon gatorade bottle

3 1/2 cups of suger
1/2 tsp of yeast.
fill to the top of bottle (leave 3 inches of space) of warm water.

1 hagen canister.
1 cup of suger
1/8 tsp yeast.

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post #12 of 31 (permalink) Old 08-03-2006, 01:50 AM
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Is baking powder the same thing as baking soda?
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post #13 of 31 (permalink) Old 08-03-2006, 02:49 AM
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Not even close

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post #14 of 31 (permalink) Old 08-03-2006, 03:09 AM
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Quote:
Originally Posted by observant_imp
Yoink--With more sugar and less yeast, what's your life span between changes?
Sorry, just saw this thread again. I change my mix about every two weeks. It hasn't completely died by that time, but I notice much less pearling after a week and a half.
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post #15 of 31 (permalink) Old 08-20-2006, 03:11 PM
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I have the Hagen Co2 Tank and a 2 liter soda bottle joined together with a gang valve. I've seen recipes where it calls for the same amount of Yeast and Baking soda for either container ..... How can this be? The only difference is the amount of water and sugar. I'm using two cups of sugar, 1/4 tsp of yeast and 1 tsp of baking soda in my two liter bottle. Should I increase the amounts of Yeast and baking soda? Does anyone here use Jarred yeast? It seem like I got more pearling when I used the single packets of yeast.

Dan

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