What's a good formula for a hagen CO2 system? - The Planted Tank Forum
 
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post #1 of 10 (permalink) Old 10-27-2006, 02:43 AM Thread Starter
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What's a good formula for a hagen CO2 system?

Hi guys! I'm not going to pay money for a fancy box with yeast and baking soda in it for my Hagen Co2 Reactor. Whats a good homemade recipe? I'd rather have something that produces more co2 and change the solution once every 2 weeks (or even once a week if that's not too much) than something that makes a little bit of co2 and lasts a month.

I got mine from ebay, and the yeast is expired by almost 2 years anyway.
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post #2 of 10 (permalink) Old 10-27-2006, 02:50 AM
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this topic gets discussed about once a week,
so best to Search all forums for YEAST.

besides various yeasts (baking vs. brewers) and sugar, some will add;

baking soda
whey protein powder
gelatin mix powder (any flavor)

under the premise that they extend the life or Co2 output of yeast.
your results may vary.


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post #3 of 10 (permalink) Old 10-27-2006, 03:00 AM Thread Starter
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I'm really not worried about extending the life. I want my yeast to live hard and die young! I don't mind changing it out once every other week.

I should say that it took 24 hours to get bubbles and right now i'm getting 1 bubble every 33-35 seconds.
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post #4 of 10 (permalink) Old 10-27-2006, 03:12 AM
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If you're going to use the Hagen cannister, fill with sugar to the line (I think it's about 1/3 cup), add 1/8 tsp yeast, and fill the the line with water.

If you want burn fast, die young, try brown sugar instead of white. Some people add baking soda, but the amount depends on the kh of your water.
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post #5 of 10 (permalink) Old 10-27-2006, 06:08 AM
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I used to use:
2L bottle filled with warm/hot water to just where the bottle starts to curve inward
2 cups sugar
1/4 tsp yeast
1/2 tsp baking soda

It produced pretty strong for 2-3wks. I used T-pieces to connect and setup four 2L bottles into a single diffuser. Worked great, then I got pressurized...
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post #6 of 10 (permalink) Old 10-27-2006, 02:54 PM Thread Starter
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How is brown sugar different? besides being totally desgusting that is...
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post #7 of 10 (permalink) Old 10-27-2006, 03:32 PM
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I think it's the coating (molasses?). All I know that when I used brown sugar in the Hagen canisters, I was changing it after about 10 days--when it slowed to a bubble every 7 seconds.

I'm still using the Hagen ladders, but use gatorade bottles instead. I add a couple of tbs of brown sugar to the bottles and they seem to start sooner and run with higher output (for a shorter period of time). With the bigger bottles, I can go longer between changes.
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post #8 of 10 (permalink) Old 10-28-2006, 10:21 PM Thread Starter
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I put in a half tsp. of yeast. it's regular yeast.

It's working fine now (great auctually!) but will it foam?
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post #9 of 10 (permalink) Old 10-30-2006, 07:17 PM
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In my Hagen I use yeast, backing soda, white sugar and add few drops of molasses.Becareful not to add too much. Much cheaper than brown sugar.
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post #10 of 10 (permalink) Old 10-30-2006, 07:30 PM
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https://www.plantedtank.net/forums/pl...recipes-2.html

Here is a good thread to read.


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