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RE: [APD] To pearl or not to pearl...

Hi Robert,

Thank you, I concur. The bubbles I'm seeing are most definitely being
produced by the plants. My reasoning is based on the following:

* The tiny bubbles appear only on the plants, nothing else
* Some plants produce far more bubbles than others
* Sources of cuts or damage on foliage produce chains of bubbles
* Another tank without plants produces no bubbles at all following the same
50% water change 
* The plants in a tank under low light produce very few bubbles, if any

Thanks Again,
Bob Zink

    You wrote:

> Date: Thu, 17 Mar 2005 14:01:39 -0500
> From: "T. Ricketts, Jr." <rtricketts at verizon_net>
> Subject: RE: [APD] To pearl or not to pearl...
> To: <aquatic-plants at actwin_com>
> Freshly drawn tap is commonly saturated or supersaturated with gases, so
> some release of gas in the form of bubbles (false pearling) is common.  But
> also from the same supersaturation, any O2 generated by the plants will not
> likely dissolve, but appear as true pearling.  If CO2 happens to be one of
> the gases present in excess, it could in turn boost photosynthesis and
> result in additional true pearling.  Don't dismiss the possibility that true
> pearling is involved quite so quickly or cavalierly.

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