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Unread 11-24-2003, 06:16 PM   #91
Cathar
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Join Date: Sep 2002
Location: Melbourne, Australia
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Was walking through the supermarket and noticed copper sulphate tablets. They are intended for "root control" of trees that have broken housing pipes.

The tablets are solid, when when mixed with water break down into a copper sulphate solution.

I guess the question is this:

Negative impacts (other than toxicity)?
Would it control nasties?
Thermal impact - I've seen some that that hypethesises that a copper sulphate solution may actually be better than straight water?
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