DIY CO2 duration question - The Planted Tank Forum
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post #1 of 17 (permalink) Old 07-18-2013, 12:34 AM Thread Starter
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DIY CO2 duration question

Hi,
i recently implemented a diy co2 bottle using 1x of 1L bottle, it work fine, but after about 4-6 hours, it stopped releasing co2.
i had to give it a little squeeze on the bottle to cause it to continue releasing co2. is that normal? or i should have 2x of 2L bottle?

Thank you
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post #2 of 17 (permalink) Old 07-18-2013, 12:37 AM
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u might not be using enough yeast or sugar
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post #3 of 17 (permalink) Old 07-18-2013, 12:38 AM
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I actually had that problem with mine today, I couldn't get it to release any c02 so I squeezed the bottle, and got a really good mist IMO. But if I have to squeeze it again I will probably end up doing it over. Its not normal to squeeze it, it should be going all the time until it runs out for good..How much sugar and yeast did you use for the mix?
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post #4 of 17 (permalink) Old 07-18-2013, 12:45 AM Thread Starter
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2 teaspoon sugar, 1 teaspoon bread yeast.. 3/4 bottle water.

thats y im finking will 2x 2L bottle be more effective? since 2x are builing gas into the filtering bottle to separate the gas.
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post #5 of 17 (permalink) Old 07-18-2013, 12:46 AM
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you are using way to less of sugar! you should be using 1 to 1 1/2 cups of sugar
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post #6 of 17 (permalink) Old 07-18-2013, 01:34 AM
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Yes, way too little sugar.

What are you using to diffuse it?
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post #7 of 17 (permalink) Old 07-18-2013, 01:36 AM Thread Starter
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the U shape diffuser,
i will try with more sugar..
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post #8 of 17 (permalink) Old 07-18-2013, 01:43 AM
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the more sugar should do the trick! what do you mean by a u shaped diffuser?
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post #9 of 17 (permalink) Old 07-18-2013, 01:45 AM Thread Starter
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this one.
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post #10 of 17 (permalink) Old 07-18-2013, 01:47 AM Thread Starter
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the co2 nano glass diffuser
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post #11 of 17 (permalink) Old 07-18-2013, 02:11 AM
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Many times DIY CO2 doesn't build up enough pressure to run those effectively. You may need to try an airstone or chopstick end.
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post #12 of 17 (permalink) Old 07-18-2013, 02:26 AM
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My recipe works very well with a glass nano diffuser and goes pretty strong for about a month. You're using too little sugar and too much yeast. Here's what I do:

-2 cups sugar in 2 liter bottle.
-1/4 tsp yeast
-1 tsp baking soda
-1 tsp protein powder (don't know if this is necessary. I have it, and I figured living organisms need more than just sugar to survive, so I decided to use it).
-1 drop Prime.

Fill 1 inch away from the top with lukewarm water and dissolve. Wait a few hours and you have CO2 that lasts for a month!

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post #13 of 17 (permalink) Old 07-18-2013, 02:31 AM
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I think it takes a little bit for the yeast to establish a colony, not sure how to explain the initial burst of CO2 though...
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post #14 of 17 (permalink) Old 07-18-2013, 02:47 AM
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2 cups of raw sugar and 1 tsp yeast in 2 liter bottle here. I actually have 2 of the set up feeding the same diffuser. My glass diffuser is made for DIY. Drop checker shows me around 30ppm.
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post #15 of 17 (permalink) Old 07-18-2013, 03:26 AM Thread Starter
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where to buy baking soda? i cant find it at woolworths
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