Re: [APD] CO2, water changes gas phase Vol1

[Derek Parr <derekparr at earthlink_net>]

Provided I didn't read Tom's post incorrectly, I believe he was 
accounting for that by using degassed water that had been sitting in a 
barrel for some time. Which does appear to make it reasonable to suppose 
the cause for the "pearling" comes from the atmosphere.   Beyond that it 
seems open to experimentation and postulation.

-derek parr


Vaughn Hopkins wrote:
> On Jan 26, 2007, at 12:35 PM, Liz Wilhite wrote:
> 
>>
>> My tanks pearl like crazy after a water change, even when they  
>> contain no
>> plants.
>>
>>
> "Pearling" after water changes, with no plants, is a horse of a  
> different color.  I'm assuming  you are referring to the air bubbles  
> that appear on the aquarium glass when a big water change is made.   
> Those bubbles just appear and remain there until they break loose and  
> disappear.  Real pearling will involve streams of bubbles coming from  
> plants, or, if the glass "pearled" there would be streams of bubbles  
> coming off the glass walls.
> 
> Vaughn
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