Acgelok wrote in message
...
Thanks a bunch for the info. every one. I've now extended the pickup tubes
in
CO2 generators to within 1" of the fluid level thus hopefully eliminating
air
buildup in the difusers Thanks again and
regards Art

Then hopefully you're not using plastic soda bottles hooked up to
powerheads, because the suction may collapse the bottle just enough for the
tubes to contact the contents of the bottle and... whoops!

Seriously, though, it really doesn't matter how far into the bottle the
tubing extends. After the first half hour or so the yeasties have consumed
all the oxygen and the process has gone anaerobic, subsequent to which the
airspace in the generator consists entirely of yeast farts, i.e. CO2.

kush