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RE: Slimy white growth associated with Yeast Method CO2

Jeremy Dwain Gilliam, in APD #690, was commenting on his problems with Yeast
generated CO2:

> I've tried the yeast method of CO2 injection twice now.  This morning I
> noticed the same problem that I had the last time.  Very small white
> strands accumulate on the side of the aquarium.  The first time that I
> tried CO2 injection the water got so cloudy that I had to completely
> change the water in my 10 gal. tank.  The "white stuff" has a slimy
> consistency, and is in the form of small thin strands.

You aren't alone Jeremy, and if you run a search on the archives of the list
you will see that it has been noticed by some people repeatedly, while
others have apparently never seen it. I've seen it in on numerous occassions
in my tanks, although it is generally just limited to a stringy white "mess"
on the "Dupla Minicascades" I use in my in-tank reactor. A number of people
have commented on its appearance on airstones which they use to feed the CO2
into their tanks. In my tanks, whenever it gets bad, I just pull the reactor
out and wash everything in hot water. I've not noticed any problems with
fish being affected by it, and I really don't know what it is, although I
would suspect a bacterial or mold growth rather than algae.

Now, on several websites I have seen that some people are using a "washer"
chamber between their CO2 producing reactor and their aquariums. In these,
the CO2 from the yeast bottle is bubbled thru plain water and then goes into
the aquarium. If anyone uses this method, could you please make a comment as
to it's effect on this "white stuff"? Does it eliminate it?

James Purchase
Toronto, Ontario
jpurch at interlog_com