Look What I found...Co2 related - The Planted Tank Forum
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post #1 of 5 (permalink) Old 02-05-2004, 01:48 AM Thread Starter
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Check out http://www.morebeer.com/index.html?p...amp;pid=KEG594

That airstone might be a good option for thos eof us that do not yet hav ea reactor or are using a powerfilter or cannister as a reactor. .5 micron bubbles that definatly would help co2 absorbtion compared to a reg stone.

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post #2 of 5 (permalink) Old 02-05-2004, 03:14 AM
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Doesn't it take alot of pressure to force co2 through it though?I don't really like the idea of having 25-30lbs of pressure going into my tank with only an airstone holding it back.

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post #3 of 5 (permalink) Old 02-05-2004, 03:16 AM
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Ummm... hate to say this, but I have a highly recommended 'fine' airstone (forget brandname) that does nothing but put out big fat bubbles. Without high pressure (like from an air pump) the gas just seems to gather at the top of the stone until it is released as 1-3 larger bubbles. Even giving the bottle a big squeeze doesn't make the bubbles much smaller. Or maybe I got a defective airstone??
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post #4 of 5 (permalink) Old 02-05-2004, 01:08 PM
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I use a superfine stone on my pressurized system, in the reactor, so that the water flow is mixing small bubbles. It works very nicely. The pressure at the stone isn't much, it is after my needle valve and bubble counter. I donít know how this would work on a DIY yeast set up.


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post #5 of 5 (permalink) Old 02-05-2004, 05:48 PM
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airstones, no matter how fine, just don't work well without pressurized CO2.
If you look for a dupla brand CO2 diffuser (try aquariumplant.com) these use a sintered glass disc that looks like an airstone disc. These will work with DIY co2 setups.
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