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: Re: Bio balls

Hi Tom:

Hmm.  With respect to CO2 I can see how gas exchange is enhanced by breaking 
up the CO2 bubbles up into smaller bubbles to increase the surface area to 
volume ration of the bubbles, and by lengthening the time the bubbles are in 
contact with the aquarium water.  Well, I guess I can see how bioballs can 
do both.  I' gonna have to try it.

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