"Duncan A. McRae" wrote in message
ble.rogers.com...
You can actually build your own CO2 generators VERY inexpensively. The
following is a rather exhaustive discussion:
http://www.qsl.net/w2wdx/aquaria/diyco2.html

For what it's worth, I do the following:
get a jug with a flat bottom and a rubber liner in the cap
SNIP

Aww shucks, you miss all the fun of having tipy soda bottles and lines full
of jello ;-)