[APD] RE: copper

["Thomas Barr" <tcbiii at earthlink_net>]

Daphne, I'd try this with a test kit.
http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=4743&Ne=40000&;
R=866&N=2004+113521
This will give you some estimation of how much you'll need for effective
dosing without worry about toxic Cu effects on fish. 

Regards, 
Tom Barr


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