Does anybody who use diy co2...
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Old 09-10-2003, 06:56 AM   #1
slyargent
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...use flour instead? Well, I'm gonna try it, and it just seems logical that flour(refined) is made up of simple straches anyway, and has loads more protein, and other nutrients than just sugar, thus, the yeast last longer.

There are also other variations like adding some sugar to help jumpstart the yeast, since it takes longer for the starch form the flour to be available to the yeast.

If you have any experience with this, please do post here.

Thank you.
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Old 09-10-2003, 05:45 PM   #2
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I tried using a sourdough recipe instead of the common sugar/yeast. Sourdough is basically flour and bacteria creating CO2. Since I bake bread weekly that seemed a very attractive option. However, the CO2 output was much less compared to the sugar solution, and getting that stuff out of the bottle was just a big mess.
But... try it... easy and cheap enough.
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Old 09-10-2003, 09:06 PM   #3
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Cleaning, oh yeah, lfour wuld be a mess!

I use a gelatine recipe that has extra packets of Knox gelatine to make harder blocks. the Knox Blox recipe on the back of the box, but I substitute 3 cups of water with 2 cups of sugar for the fruit juice. In a 2 liter genreator I usually use 1/4 the recipe and 1/4 teaspoon wine yeast and sometimes 1/4 teaspoon yeast nutrient.

Now I'm experimenting with using 1/2 the recipe and replacing some water after 2 weeks.

Actually the sugar with champagne yeast worked pretty well, too. I might have needed more sugar to get the rate up to what I was used to with the gelatine.

Still playing with it, but not keeping good records so I tend to forget what's what.
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Old 09-10-2003, 09:26 PM   #4
slyargent
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The gelatin is pretty good I heard, since it provides some protein. But it can be expensive(a dollar each two weeks or so?) so that amounts to about 24 dollar per year. My goal with this tank is to get as low tech/cost as possible, with vigourous plant growth(I wanna prove you can get beauftiful tank without the cost, like what wasserpest did, I really love your tank, wasser!). Anyway, I'll try to compare the cost and how long the tank would last and see which last longer, but cheap.

PS: wasserpest, what was the ration of your sourdough recipe? Was it 1 part flour :2 parts water.
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Old 09-10-2003, 09:49 PM   #5
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slyargent,
that's right, 1 part flour and 2 parts water was the recommanded mix to keep it fluid enough to be able to get most of it back out of the bottle.
For low cost with good output, I found just a simple sugar/yeast/water mix gives the best results. Using other ingredients extends the live of the mixture a couple of days, but to me the added cost and complexity isn't worth the savings in "labor".
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Old 09-10-2003, 10:35 PM   #6
29gallonsteve
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I used to use the Jello recipe, but I found that it took too long for mine to start producing CO2. While it did last longer, it produced a less intense concentration over that longer time frame.

The result: less CO2 in the water...less frequency of bottle changes.

Hey, for what its worth, the 10 minutes per month that it takes for me to mix up another batch of yeast CO2 mix is worth the concentration.

Thanks,
Steve
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Old 10-01-2003, 02:36 PM   #7
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Replacing my Yeast concoction for the first time....Just put a little bit 1/4 cup maybe in the new bottle...then put 2 cups sugar...1/4 tsp yeast...2 cups warm water and mixed it all up....will see how this works...reading about putting a little bit from the last mixture made me want to try this. Will keep you posted on how this works.

Next question...Does anyone know how the Hagen CO2 system manages to make such consistent bubbles? Is it the stabilizer? I know some of you have been making attempts at its recipie was wondering if any of you had some success.

Mike
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Old 06-07-2004, 08:14 AM   #8
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Gutt, I believe the stabilizer is baking soda. someone correct me if i'm wrong. I believe it's just to lengthen the life of the yeast

any updates on the jello method, anyone?
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