NANFA-- water circulation trick
Wed, 31 Jan 2001 18:34:51 -0600

I'm sure this is old hat to some of you guys, but I figured out (not
that I had given it much thought before) a way to simulate the
manner in which water circulates in an annular tank or "Ferguson
Flume". You can do this with two powerheads, but in my case I
used the Millenium 3000 internal filter and a small powerhead, both
of which I purchased at the last NANFA auction. It is very simple:
you put one powerhead in the lower left corner of the tank, next to
the front glass, and direct the flow from left to right. The other
powerhead goes in the opposite corner of the tank next to the back
glass, and the flow is directed from right to left. The result is that
the water flows in a continuous stream in an elliptical pattern. Try
it - it works great!


Jackson, MS
Whenever I see an old lady slip and fall on a wet sidewalk,
my first instinct is to laugh. But then I think, what if
I was an ant, and she fell on me. Then it wouldn't seem
quite so funny.

/"Unless stated otherwise, comments made on this list do not necessarily
/ reflect the beliefs or goals of the North American Native Fishes
/ Association"
/ This is the discussion list of the North American Native Fishes Association
/ To subscribe, unsubscribe, or get help, send the word
/ subscribe, unsubscribe, or help in the body (not subject) of an email to
/ For a digest version, send the command to
/ instead.
/ For more information about NANFA, visit our web page,