DIY CO2 Diffuser - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 02-09-2009, 03:24 AM Thread Starter
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DIY CO2 Diffuser

Hey guys. I'm trying to make a yeast CO2 diffuser in my tank and was wondering if you could provide some input. I have a small 5.5 gallon tank and I just had a couple of questions:

- Does it really matter what kind of yeast I use or can I use the cheapest possible?
- Do I need to get a bubble counter or can I just connect my bottle directly to the co2 diffuser?
- What size bottle should I use for my 5.5 gallon tank with fish?
- Why do some people use 2 bottles instead of 1?
- How often should I add the yeast/sugar mixture?
- Should I lessen the portion of yeast/sugar used since it is a small tank

Thanks guys and I'll post some pictures up once my plants start to look much better!!
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post #2 of 6 (permalink) Old 02-09-2009, 03:52 AM
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Quote:
Originally Posted by mjlee60 View Post
Hey guys. I'm trying to make a yeast CO2 diffuser in my tank and was wondering if you could provide some input. I have a small 5.5 gallon tank and I just had a couple of questions:

- Does it really matter what kind of yeast I use or can I use the cheapest possible?
- Do I need to get a bubble counter or can I just connect my bottle directly to the co2 diffuser?
- What size bottle should I use for my 5.5 gallon tank with fish?
- Why do some people use 2 bottles instead of 1?
- How often should I add the yeast/sugar mixture?
- Should I lessen the portion of yeast/sugar used since it is a small tank

Thanks guys and I'll post some pictures up once my plants start to look much better!!
1. I believe some types of yeast last longer than others, although I'm not quite sure, try searching it

2. It's optional, I don't have one.

3. 1 or 2 liters should be fine.

4. To provide more CO2

5. Replace it whenever it runs out

6. No, just use a smaller bottle.

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post #3 of 6 (permalink) Old 02-09-2009, 03:57 AM
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Here's a good write up that may help you out some.


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post #4 of 6 (permalink) Old 02-09-2009, 12:39 PM
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If you are looking for a good difuser I use a hagen mini elite underwater filter.
i put the end of the tube in through the intake and it sprays out a mist of co2 bubbles.
and if you dont want all the water movement you can just put the little filter from the inside over the spray head thing and the bubbles just float up.
Good luck!
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post #5 of 6 (permalink) Old 02-09-2009, 07:28 PM Thread Starter
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Great. Thanks guys. I just hope I don't blow up the bottles
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post #6 of 6 (permalink) Old 02-10-2009, 01:54 AM
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Im a cheapo so i used a party popper and connected it to my tubbing and used a heater suction cap to hold it on the glass below the intake to my internal canister filter. works a dream there is always pin prick size bubbles floating around the tank. and the party popper means the co2 has longer exposure to the water before it is churned up.
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