Best Yeast for DIY CO2? - The Planted Tank Forum
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post #1 of 31 (permalink) Old 12-29-2011, 05:25 PM Thread Starter
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Best Yeast for DIY CO2?

I know I should use a winemaking yeast, but is there a specific brand or variety I should try to get?

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post #2 of 31 (permalink) Old 12-29-2011, 05:44 PM
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typically champagne yeast

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post #3 of 31 (permalink) Old 12-29-2011, 05:50 PM Thread Starter
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Is there only one type of champagne yeast?

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post #4 of 31 (permalink) Old 12-29-2011, 06:10 PM
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i wouldnt bother going for specific types, its pretty much the same in what we use it for

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post #5 of 31 (permalink) Old 12-29-2011, 08:26 PM
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Champagne yeasts will last a day or two longer, but are 10X the price. Good old baker's yeast is by far the most economical way to run DIY CO2.
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post #6 of 31 (permalink) Old 01-02-2012, 01:29 AM
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The cheapest yeast from Costco worked the best for me. It was a huge block for about $3. I froze most of it in an airtight container, and took out and kept a small portion at a time in the fridge.
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post #7 of 31 (permalink) Old 01-02-2012, 05:01 PM Thread Starter
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Originally Posted by Sharkfood View Post
Champagne yeasts will last a day or two longer, but are 10X the price. Good old baker's yeast is by far the most economical way to run DIY CO2.
Are you sure? I read that better yeasts can last up to three weeks because they have a higher alcohol tolerance.

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post #8 of 31 (permalink) Old 01-02-2012, 05:21 PM
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Are you sure? I read that better yeasts can last up to three weeks because they have a higher alcohol tolerance.
Standard baker's yeast might last that long. Feel free to experiment, but DIY CO2 is a continuous money sink as it is.
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post #9 of 31 (permalink) Old 01-02-2012, 06:36 PM
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Standard baker's yeast might last that long. Feel free to experiment, but DIY CO2 is a continuous money sink as it is.
Any CO2 is a continuous money sink.


DIY just doesn't have a huge upfront cost.

Also, the Champagne yeast is worth it, as long as you're not just dumping your bottle at the end. Empty the bottle, but DON'T CLEAN IT. You want the yeast left over.. that way you don't have to keep buying yeast.
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post #10 of 31 (permalink) Old 01-02-2012, 11:19 PM
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don't fall for it. I've been doing diy C02 fors years now. it's all the same yeast is yeast. I've tried all kinds and it all lasts about two weeks give or take.
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post #11 of 31 (permalink) Old 01-03-2012, 01:27 AM
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it's all the same yeast is yeast..
No, its not. different strains have different alchohol tolerances.

We've been selectively breeding and tweaking brewer's yeast for millenia.

There are some drastic differences in how they perform.
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post #12 of 31 (permalink) Old 01-03-2012, 02:05 AM Thread Starter
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Any CO2 is a continuous money sink.


DIY just doesn't have a huge upfront cost.
THANK YOU! For some reason, people on this forum don't seem to understand that some of us can't afford to pay more for CO2 than we do for everything else in the tank combined. And yes, I know I could save up for the parts, but getting to $200+ is hard when you have $20 a month to work with.

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post #13 of 31 (permalink) Old 01-03-2012, 03:35 AM
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Additionally, for a small tank something like excel really isn't a bad option. I realize that it's not CO2 and doesn't work as well as CO2 does, but in the tiny quantities that are consumed by a 20g or smaller tank, a $7-10 bottle lasts most of a year, which beats DIY CO2 hands down and allows you to save up for a pressurized system while still helping the plants grow.
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post #14 of 31 (permalink) Old 01-03-2012, 03:52 AM
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I prefer diy, it keeps me more involved with my tanks. it wouldn't be much of a hobby if everything just ran on it's own and we only had to look at it every six months.
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post #15 of 31 (permalink) Old 01-03-2012, 04:05 AM
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One thing people do wrong with yeast setups is washing the bottle. When the co2 has stopped producing, decant(pour off...) the liquid and leave the solids behind. Add another sugar water batch and in no time you will have co2 again. The yeast cake at the bottom will keep truckiing and trucking.
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