Don't ever put copper into a reef tank!
rather use UV. got rid of my whitespot. weeman's fallow idea is correct. but i reckon 4 weeks will do the job with no fish around.
any ideas on a simple QT.should i buy a small tank?
Sorry bud, but that is not only wrong, but misleading, 10 weeks is the recognised minimum in the fallow period, i accept UV can help, but it will not get rid totally.