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CO2 usage question

At 03:48 AM 2/28/99 -0500, Dennis wrote:
> I'm using
>a bottle that fills with about 2 lb. of CO2 (by weight)  I'm trying to
keep it
>at about one bubble per second.  However it seems like upon every refill
>I'm running out of CO2 faster.  How long does a bottle last for other people?
>My last refill did not last a week even.

Two pounds should last a year or more.   Either you are not getting two
pounds or it is running out a lot faster than one bubble per second.   Did
you carefully weigh your tank before and after it was filled?   That would
be a cheap way to verify that you got two pounds.   How are you counting
bubbles?  I have seen some bubbles that are huge.   You want your bubbles
to be about 3/32" (2.2mm) in diameter.   Please advise.

Dave Gomberg, San Francisco            mailto:gomberg at wcf_com