Diy co2 help - The Planted Tank Forum
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post #1 of 18 (permalink) Old 10-11-2011, 03:02 AM Thread Starter
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Diy co2 help

So i was all excited to attempt a DIY CO2 today....got my sturdy bottle, airline tubing, check valve, and a fluval co2 diffuser. However when i was setting it all up i don't think the diffuser worked bc i blew into the end of the tubing and no bubbles came out at all. Does anyone know how i can do a diy diffuser or where i can buy a good one online?
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post #2 of 18 (permalink) Old 10-11-2011, 03:53 AM
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I use limewood diffusers. The last for about a month before replacing.

Opportunity is often missed because it's dressed in coveralls and looks like work.
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post #3 of 18 (permalink) Old 10-11-2011, 04:04 AM
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Not sure what diffuser you're referring to. If it's any kind of ceramic disc, there's no way that blowing into it would create bubbles. It takes a heck of a lot more pressure than that.
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post #4 of 18 (permalink) Old 10-11-2011, 04:05 AM Thread Starter
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Does that work better than an airstone? because i have heard airstones are not great for co2 diffusion
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post #5 of 18 (permalink) Old 10-11-2011, 04:06 AM Thread Starter
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Originally Posted by kevmo911 View Post
Not sure what diffuser you're referring to. If it's any kind of ceramic disc, there's no way that blowing into it would create bubbles. It takes a heck of a lot more pressure than that.
Yea it was a ceramic one, haha woops....so than would a DIY setup even produce enough pressure?
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post #6 of 18 (permalink) Old 10-11-2011, 04:09 AM
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Originally Posted by falcooo View Post
Yea it was a ceramic one, haha woops....so than would a DIY setup even produce enough pressure?
Probably. Not all diffusers will work with a DIY setup. Generally the cheap glass ones will. Not sure about the Fluval. You'll have to give it a shot. If nothing happens after 24 hours, try something different. A simple bamboo chopstick stuffed into the end of the airline will do the job in a pinch.
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post #7 of 18 (permalink) Old 10-11-2011, 04:15 AM Thread Starter
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Originally Posted by kevmo911 View Post
Probably. Not all diffusers will work with a DIY setup. Generally the cheap glass ones will. Not sure about the Fluval. You'll have to give it a shot. If nothing happens after 24 hours, try something different. A simple bamboo chopstick stuffed into the end of the airline will do the job in a pinch.
Interesting idea kev....ill be sure to give it a shot tomorrow night and see how it goes. Do you by chance have a suggestion for ingredients, like how much sugar/yeast and how long typically lasts?
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post #8 of 18 (permalink) Old 10-11-2011, 04:20 AM
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typically around 2-3 weeks, depending on your mixture.

btw, there are tons of threads on the subject. do a little searching if you have some time. there is a bunch of info regarding ingredients, mixture, diffusing, etc.

good luck dude.
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post #9 of 18 (permalink) Old 10-11-2011, 06:18 AM
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i use a small cylinder airstone, its sold at petco, bubbles are tiny, and works really good, i figure go with a wood one, order online....
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post #10 of 18 (permalink) Old 10-11-2011, 10:37 AM
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I used a gallon container with 1/2 teaspoon yeast ( which for a two litre is set for twoo weeks) and 6 cups of sugar. I got about 4 weeks out oof iit. More accurately 3 weeks and 3-5 days

Ceramic diffuser worked fine for me. Actually about 15 min oof stirring everything together my diffuser started releasing bubbles.

Make sure u seal ur container real well or it will leak and no diffuser will work.
No matter home many threads u see saying drill a small hole and squeeze the line through. Go the xtra mile, put a little tank sealant around it. It takes 48 hours to cure but its worth it. I never had a leak

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post #11 of 18 (permalink) Old 10-11-2011, 11:55 AM
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I keep preaching about champagne yeast and guess I'll do it again.

2L, 2cups sugar, 1/2 tsp champagne yeast, 1/4 tsp baking soda = on its 10th week. Starting to slow down a bit but still producing. Have never had a champagne yeast setup go for any amount of time shorter than six weeks.


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post #12 of 18 (permalink) Old 10-11-2011, 11:57 AM
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whats the cost effectiveness of that?

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post #13 of 18 (permalink) Old 10-11-2011, 01:24 PM
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Quote:
Originally Posted by somewhatshocked View Post
I keep preaching about champagne yeast and guess I'll do it again.

2L, 2cups sugar, 1/2 tsp champagne yeast, 1/4 tsp baking soda = on its 10th week. Starting to slow down a bit but still producing. Have never had a champagne yeast setup go for any amount of time shorter than six weeks.

Wow - that is rather a compelling argument.

BTW - More Yeast = More CO2, but for a shorter time.
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post #14 of 18 (permalink) Old 10-11-2011, 01:30 PM
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As far as your diffuser goes. I would look up lee's wood block diffusers. They are cheap and easily replaceable. And it puts off a much smaller bubble than an airstone. And just FYI a chopstick stuck in the end would provide too large of a bubble forthe water to even try to absorb. That's a last resort kinda thing only.

How big is the tank? Filter type? Fish?
This will be what tells you how far you need to go with your co2 setup. I have used DIY in my 75. (yea I said it 75) and it works perfectly. I only use two bottles and a power head/gravel vac setup.

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post #15 of 18 (permalink) Old 10-11-2011, 02:29 PM Thread Starter
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Originally Posted by Elrodg View Post
How big is the tank? Filter type? Fish?
This will be what tells you how far you need to go with your co2 setup. I have used DIY in my 75. (yea I said it 75) and it works perfectly. I only use two bottles and a power head/gravel vac setup.
thanks for all the input....but i have a 55 gallon tank, mainland 350gph biowheel filter, and only a few tetras for now. also the tank is lightly planted now but ultimately i would like it heavily planted
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