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Re: Aquatic Plants Digest V3 #1078

> Date: Mon, 7 Jun 1999 21:26:01 -0600 (MDT)
> From: "Roger S. Miller" <rgrmill at rt66_com>
> Subject: More than one tank on one yeast bottle?
> I must have too much time on my hands :)
> I have been thinking about adding CO2 to two side-by-side 10 gallon tanks.
> I don't like the idea of running two separate little yeast-CO2 generators.
> Has anyone succeeded running CO2 to two tanks from a single 2-liter (or
> half gallon) CO2 generator? If so, how did you plumb it?
> Roger Miller

I do this by running both tanks off the same canister filter.
The tanks are connected by a U-shaped section of pipe; the 
filter draws from one and empties in the other.

This requires that the tanks are at the same level, and that
you don't let the tubing that connects them get clogged.

I use 1 1/4" PVC pipe from Home Depot for the connecting

First, I had nothing on either end of the pipe. The fish
from one tank swam into the other, where they got eaten by
a voracious predator.
Bad idea.

Then I took some mesh from an old fish net and put it
around the end of the connecting pipe with a rubber
band. It got clogged with java moss and dead leaves and
there was a flooding incident.
Bad idea.

Now, the end of the pipe is covered with one of those 
little black plastic pots which they stuff with rockwool
to sell potted plants. It's fastened with a tie wrap.
This works great.

Drew, in Baltimore on a code red ozone day.