I have a few small zebra danios in my tank that occasionally go through the
overflow teeth and down into the sump. My biggest concern is if they end up
in the water return chamber and get too close to the return pump, I'll end
up with ground fish jetted back up into the display tank. So far so good
thgough. The morning role call has had everyone accounted for lately.

Justin

"David" wrote in message
...
Has anyone had any experience with small fish swimming over, or being
swept over, weirs? Do they generally tend to stay away from
unexpected fast-moving currents "into the unknown abyss", or do they
instead tend to like to play with "weir roulette"? I am specifically
thinking right now of mosquito fish, but if anyone has experience with
larger fish, that would be of interest to me as well.

Thank you very much,
David
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