Decided to get back into SW hobby again after time away for various reasons -time availabitly to devote to hobby and money reasons mostly. I was one of those hobbiest who did not use a QT and was surprisingly successful. Have always taken things very slow and am not in a hurry to do anything fast this time around. Decided to do a QT this time. My initial thought is it is used mostly for initial observence of fish to ensure no disease. In one thread, I got the impression that it may be good practice to do immediat copper treatment in QT on new fish even if they do not display a problem as opposed in just waiting and watching. Is it practice to do copper in QT right from the get go?