> >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!
>
> Martin,
>
> This is fascinating. How are you applying this in your tank(s)? To what
benefit?
> Is there a perceived difference in the behavior or health of the fish?
Which
> fish stand to benefit the most? Or is the benefit simply aesthetic?
>
> Chris Scharpf
>
>
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/----------------------------------------------------------------------------- /"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 / nanfa_at_aquaria.net. To subscribe, unsubscribe, or get help, send the word / subscribe, unsubscribe, or help in the body (not subject) of an email to / nanfa-request_at_aquaria.net. For a digest version, send the command to / nanfa-digest-request_at_aquaria.net instead. / For more information about NANFA, visit our web page, http://www.nanfa.org