"nut" wrote in message
.. .
Hi all

I have a tank with two small dempseys in it, with two filters - a small
external cannister and an internal powerhead filter.

When the water is filled to the top neither filter outputs produce any air
bubbles in the water, and only a small current... enough to push debris
around the tank, with a ripple on the surface.

Is this enough to keep the water from stagnating?
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Yes! You do realize how large and aggressive these fish get I hope.
--
RM....
Frugal ponding since 1995.
rec.ponder since late 1996.
My Pond & Aquarium Pages:
http://tinyurl.com/9do58
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