Well I know you should QT the fish before adding to the tank, but it wouldn't happen to me. Well lesson learned. My new tang has a 3 grains on his fin and a couple on one side 5 0r 6 total. He is showing no ill effect other than a little rubbing on a rock. Getting the QT tank up and running but the copper and test kit for copper is in the mail should be here on 3/1/10. What should I do while I wait for it? Thanks Larry