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copper sulphate and Trout

I want to kill oxygen weed in a stream. Will copper sulphate ⇦ this on eBay or Amazon [affil links] kill the trout ?

GrahameThorne
Vineyard and Lodge - Blenheim, New Zealand

Grahame!

Why don't you go to your local Dept. of Fisheries who, I'm sure, would have a suggestion or two to make.

At a guess, anything added immoderately to a fish stream would cause a plethora of piscatorial panic.

Freeman Newton [deceased]
(It is our sad duty to advise that Freeman passed away
April 21, 2012. R.I.P. old friend).

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