Colleagues of mine use electrofishing at conductivity values of approx. 1000 miSi. They reduce the length of the "Kathode" by tying it into a knot. The electric field you get is smaller, but still effetive. They use a normal fuel-driven electrofishing gear. Hope, this helps.
Irene
************************************* Irene Zweimueller e-mail: [log in to unmask] Inst. of Zoology phone: ++43 1 31 336 1337 or 1342 Dept. of Limnology fax: ++43 1 31 336 778 Althanstr. 14 A-1090 Wien AUSTRIA - EUROPE
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