that little bit of copper would do damage?
It could. Some organisms like anemones and corals are HIGHLY sensitive to even tiny amounts of copper. And when copper gets into the tank it can work its way into the silicone then leach out slowly over a long time.
Now how MUCH copper got into your tank and how MUCH anemones and such can tolerate if any AT ALL I can't say. Personally unless someone who has more knowledge about this comes along to correct me I'd say do your water changes with RO/DI water, test for copper, when the tank is ready if it tests negative for copper I'd try out ONE very hardy specimin of some sort then see how it does. If it does fine you could go ahead cautiously. If not step back and evaluate why it didn't. If everything else seems perfect but you still lost it it *could've* been the copper even if the test for it was negative.
Someone who knows more about this please :help: ?