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Compressed air and CO2

Discussion in 'General Plant Topics' started by stcyrwm@adelphia.net, Sep 22, 2005.

  1. stcyrwm@adelphia.net

    stcyrwm@adelphia.net Prolific Poster

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    Tom's "New CO2 revelations", led to a discussion (on another board) about using air which is .03% CO2 to get CO2 to plants. Shalu has been doing this with an air pump fed into a HOB. Tom suggested and I want to try using compressed air fed into a ceramic diffuser or something else to create microbubbles that would then be dispersed by a powerhead, the same as he's doing with CO2.

    I'm going to start putting this together tomorrow and would like to hear any feedback. I have a compressor and a tank so that parts easy. Pressure would be low enough that regulating pressure should be easy but I'll have to research that a little bit. Then it's a matter of creating the microbubbles to disperse. I doubt anyone has a ceramic diffusor locally but I'll check. Another idea is a Duetto with aerator.

    Open to ideas and suggestions........

    Bill
     
  2. fishface

    fishface Guest

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    Re: Compressed air and CO2

    i think you must have misunderstood something somewhere...air is roughly 79% nitrogen and 21% oxygen with small amounts of trace gasses. ;)
     
  3. Rafael

    Rafael Junior Poster

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  4. stcyrwm@adelphia.net

    stcyrwm@adelphia.net Prolific Poster

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    Re: Compressed air and CO2

    Sorry, it should have been .033%............ I corrected message above
     
  5. Tom Barr

    Tom Barr Founder
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    Re: Compressed air and CO2

    See Fick's 1st law of diffusion for more on the mechanisms as to why this works.

    Regards,
    Tom Barr
     
  6. stcyrwm@adelphia.net

    stcyrwm@adelphia.net Prolific Poster

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    Re: Compressed air and CO2

    Is there a risk of fish getting "gas bubble disease" with injecting a mist of air into a tank? A couple guys have raised this issue on the APC forum but I haven't really found anything definetive in searching around the internet.

    Thanks, Bill
     
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