Possible Copper contamination?

"dave" wrote in message ...
However there was a big notice about the tangs water having levels of copper
in them!!! Whoops some of the tangs water escaped whilst I was introducing
him into the tank. I have no idea how much copper the supplier doses so
cannot say how much escaped.

I would say the amount will be negligible.
Cooper concentration allowed for fish is higher than for inverts,
BUT if you had a cup or two of water which does not kill the fish
diluted in 200 gallons of water in your tank, the solution of
copper will become very, very weak and negligible.