Hey Matt

Thoroughly check the bottle and lines for airleaks, especially where the
tube goes through the bottle lid. We have a product over here called
Prestick, looks like gum and is used for sticking up posters etc, a nice
glob of this wrapped around the tube entering the bottle top works well.

If you don't have leaks then your yeast has probably gone off! Yes, it has a
shelf life, buy fresh yeast, keep the packet in the fridge once opened, you
can roll it up and seal it with a clothes peg so no air gets in
.........another thing, don't use boiling water, this can kill the yeast
culture.
HTH
--
**So long, and thanks for all the fish!**




"Matt" wrote in message
...
Hey, all,

Just wanted to see if anyone else out there has had this problem and might
be
able to help. I have a 120 gallon tank with DIY CO2 injected into the
filter
pickup. Problem is, my CO2 production is extremely low... Like 1 bubble
per 3
minutes. The first batch I ran on this tank kicked butt to the tune of a
bubble every 2 seconds for two weeks, but to date all successive batches
have
been duds. I tried adding baking soda, but it didn't help at all. In
fact,
that batch was probably the worst to date. I cant seem to get this stuff
going
well. I use a 1 gallon gatorade jug with 3.5 cups of sugar and half a tbs
of
Fleishmann's active dry yeast. Can anyone figure out what's causing this
problem?

Thanks in advance!

Matt