It's good to know form the experience of long time hobbiests that quarantining new aquisitions is not always done. My 125 gallon is new (February '02) and my livestock consists of 4 fish,the lates additions being a pair of true perculas two weeks ago. I am comtemplating my next purchase and whether or not to set up my QT tank and using that for a month before introduction into the main tank. I did not do that with my the current livestock, but there wasn't much at stake yet either.
I did worry about the one clown not eating for 5 days, but all the fish are doing quite well right now. Right now I'm thinking of just waiting another couple of weeks, picking up my new aquisition for them lfs
and placing it right in the main tank.
That's one of the benefits of have a lfs
you can trust. I can see the livestock I want or they can order it for me. The perculas were in their tank for several weeks and were on hold for me for a week before I brought them home.