Diy co2 - The Planted Tank Forum
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post #1 of 5 (permalink) Old 06-04-2017, 06:33 PM Thread Starter
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Diy co2

Hello everyone I set up a diy co2 system for my 10 gallon with yeast and sugar in a 2 liter bottle and it's producing co2 but as I'm new to this I have some questions. Is it alright if the co2 bubbles are just floating to the top of the tank (an air Stone is attached to the tube) and how many bubbles per minute because I was getting around 22 per minute thank you in advance.
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post #2 of 5 (permalink) Old 06-05-2017, 02:45 AM
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If the CO2 bubbles are rising to the surface of the aquarium, it means that it is being wasted (as it is not being dissolved into the water).

Unfortunately, with DIY CO2, you will be limited in methods of diffusion.

22 bubbles per minute sounds roughly OK; you can always get a drop checker to estimate CO2 concentration


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post #3 of 5 (permalink) Old 06-05-2017, 03:30 AM
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Running the CO2 output into a powerhead does a pretty good job.

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post #4 of 5 (permalink) Old 06-05-2017, 03:59 PM
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Consider 2x 2 liter bottles and switching one out every other week, it will keep your co2 consistent. I use 2x 2 liter bottles for my 15 gal and they give me 1-1.5 bps, my drop checker stays green/yellow green. My home stays around 73 to 74 f and 2 cups sugar, 1 tsp yeast and 1 tsp baking soda last 2 weeks. Do make sure you tube the 2 liters to a watter bottle half filled or similar before you run the tube to a power head or diffuser, if not youll get nasty yeast growth in your tank. The water bottle acts as a gas separation chamber and "scrubs" the co2 bubbles so that only the gas reaches your aquarium and not air born yeast. Im sure you already know to use a check valve to prevent the tank from siphoning back into the 2 liters. I use the small fine bubble air stones from the pet store for a diffuser. I ziptied mine to the underside of a koralia type power head and my tank is FILLED with tiny co2 bubbles. Make sure you keep the waters surface calm, surface agitation gasses off co2. Fluval drop checkers are cheap and helpful to let you know where your co2 is.
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post #5 of 5 (permalink) Old 06-06-2017, 06:35 AM Thread Starter
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Thanks for all the replies just bought a diffuser at my lfs today and it actually worked on my diy system since I don't have an air pump I have it under my filter and the bubbles seem to be getting dispersed around the tank
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