Reel McKoi said the following on 1/9/2008 10:41 PM:

"Randy Webb" wrote in message
...
g_in_k_o said the following on 12/31/2007 3:23 PM:

snip

You can bubble your own CO2 with yeast, sugar and water in a 2 liter
soda
bottle. It's a pain to keep feeding the yeast, but it's pretty cheap
and
does a good job for many plants. Google "DIY CO2" should get some
info to you.

URL: http://thereeftank.com/forums/showthread.php?t=90039&page=23

About half way down that page is a section where the guy posted
pictures and instructions on how to make a DIY CO2 generator. I found
that article while researching for a reef tank. I made one two nights
ago and it works good. Too good in fact. I double dosed the yeast
trying to jump start my plant tank and ran into a problem worse than
recharging the yeast. Trying to regulate the CO2. Instead of bending a
stiff piece of tubing, I simply used flex tubing and ran it through
the bottom of the strainer (after drilling a hole for it). The problem
is that it produces so much CO2 that the bubbles actually build up and
cause my filter to "dry run" for about a half a second every minute or
so. I am going to have to put a T in it and split it up. Impossible to
regulate.
==============================
Thanks Randy but I really don't have the time to mess with something
like that. I can kill all my fish if I make a mistake.

That is very true. I tried it because I was setting up a plant tank. The
hope was to make it a planted and fish tank but I wanted the plants
established first, then introduce the fish. Since there were no fish, I
didn't have to worry about over-dosing the CO2.

One thing I have thought about doing was putting the T in it and let one
side just dump out (not into the tank) so that I could try to regulate
what is going into the tank.

--
Randy
Chance Favors The Prepared Mind