DIY CO2 with glass and ceramic disk diffuser - The Planted Tank Forum
 
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post #1 of 8 (permalink) Old 05-04-2009, 12:12 AM Thread Starter
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DIY CO2 with glass and ceramic disk diffuser

im using the glass diffuser (with the white disk). and it starts working later then the bubble ladder, and ends sooner. im guessing its because of the extra pressure it needs. so here is the question:
how often do you change your CO2?
and is a 1 liter bottle enought for ~7 gallons (and ADA 30C)?

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post #2 of 8 (permalink) Old 05-04-2009, 12:18 AM
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im using the glass diffuser (with the white disk). and it starts working later then the bubble ladder, and ends sooner. im guessing its because of the extra pressure it needs. so here is the question:
how often do you change your CO2?
and is a 1 liter bottle enought for ~7 gallons (and ADA 30C)?
the brew i made last week is still bubbling strong until now. 8 days and its still going. i think it really depends on how you have formulated your mix.
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post #3 of 8 (permalink) Old 05-04-2009, 12:41 AM
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I change my CO2's about every three weeks. Sometimes I go a bit longer if the weather's cooler and the yeast is less active.
As for if it's enough for your 30-C, it depends on the light you're pouring onto it. If you're going close to twenty-eight watts with a non-spiral CF, I'd recommend two DIY setups.
If you're lower than that, you should be okay.
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post #4 of 8 (permalink) Old 05-04-2009, 12:43 AM Thread Starter
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im going 27watts with a quad bulb (like a PC that has 2 tubes, but its has 4), so you are saying i should have 2 liters? or do you mean to totally seperate systems with 2 diffusers as well?

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post #5 of 8 (permalink) Old 05-04-2009, 12:53 AM
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I use 2 powerade bottles to run my glass diffuser. 1/4 teaspoon of yeast and a little less than half a cup of sugar in each one. lasts about 2 weeks near the end the bubbles slow down a bit but if you give it a shake it will start going again.
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post #6 of 8 (permalink) Old 05-04-2009, 01:27 PM
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I change my CO2's about every three weeks. Sometimes I go a bit longer if the weather's cooler and the yeast is less active.
How much yeast do you use? I get nowhere near that, and frankly I'm jealous.
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post #7 of 8 (permalink) Old 05-04-2009, 02:01 PM
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I use a quarter teaspoon of yeast and a teaspoon of baking soda, Reg. Please keep a couple of things in mind before you get jealous, however. One, my house is hella cold. In the warmer months, the yeast does expire much more quickly. Two, I don't measure CO2 levels with an indicator. CO2 levels could drop significantly after two weeks for all I know. I simply use pearling and plant growth as indicators of CO2 saturation. And, three, sometimes a glass diffuser can clog even without visible signs of clogging and a quick bleach dip can yield a week or two of additional CO2.
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post #8 of 8 (permalink) Old 05-06-2009, 04:13 PM
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I use a half teaspoon, two cups of sugar, and a teaspoon of baking soda. I get maybe 7-10 days at around 1 bps. That is on a 24 inch deep tank. I don't use a glass diffuser (a wood-stone), but I feel like it needs a good amount of pressure to get through two feet of water. According to the PH, I am getting up around 30ppm. That is pretty good for me, but it is not a super high light tank. Sorry I didn't say that earlier, I was overcome. UG, I hear what you're saying. I think that I am still jealous though.
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