The LFS has a yellow tang they have had for over 2 months. Its in a tank they run copper in. Why is it better to bring that fish home and put it in a new (unaged) enviroment with no live rock to graze and the tank itself is to small for a tang anyway? Looks to me like that would stress the fish out enough to make it sick? Then, move it again (more stress in a month). Basically it has been quarantined at the LFS hasn't it? If its been in copper for 2 months, why would it come home and break out in my tank all the sudden? PLease explain this to me, b/c common sense is telling me the least amount of stress to the new fish in this situation is to put it straight into its new home, thats appropriate for its size and has a natural live rock to graze on enviroment.