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But isn't the idea of a closed containment system that there is no
contamination of the surrounding water? Do electrofishing tanks accomplish
that?
FWP
On Fri, 4 Oct 2002, James B. Reynolds wrote:
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>
> Dr Harrod,
>
> As an electrofishing instructor for the US Fish and Wildlife Service, I have
> always advised our class participants to use continuously-circulating
> tanks instead of closed systems. You can get submersible,
> battery-powered water pumps that will provide a steady flow of freshwater
> at ambient temperature and oxygen levels from the water body you are
> sampling. In my experience, this is far superior to the situation with a
> closed system where you try to aerate the water but also have to deal with
> increasing temp in the tank on warm days.
>
> I urge you to consider using a water pump to run water through your tank
> and avoid the problems related to aeration altogether. --jbr
>
> Dr. James B. Reynolds
> Emeritus Professor of Fisheries
> School of Fisheries and Ocean Sciences
> University of Alaska Fairbanks
> P.O. Box 757220
> Fairbanks, Alaska 99775
>
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