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Re: Aquatic Plants Digest V5 #407

Hello Davorin,

Copper toxicity is EXTREMELY dependent on water composition -- hardness,
other ions present, form of copper, etc.

Furthermore, different organisms have VERY DIFFERENT susceptibility to
copper, so that no generally valid "safe limit" can be provided.



> Date: Wed, 23 Oct 2002 10:15:07 +0200
> From: "Davorin Palijan" <davorin.palijan at os_tel.hr>
> Subject: How much Cu is toxic?
> I wanted to ask for safe levels of Cu in planted tank.
> How much Cu can fish/plants/snails tolerate without
> ill effects?
> Thanks,
> Davorin