Acclimation / QT?????

[faraday]

What is the difference between QT and Acclimation? Are they the same thing, just different methods? What livestock would you QT and what livestock gets acclimated?
I had to ask, because I have been reading a lot of threads, and someone says they get a fish, and in one thread someone says to QT it, and in another one, someone says to acclimate it right?

 

[col]

All stock needs to be acclimatised (is that a word) by floating the bag in the tank it is being added to match temperature. Then water from the tank is slowly added to the bag to match SG, pH etc until the livestock is put in the tank.
QT means quarantine tank. This is a seperate tank where new fish (not inverts) are put for a few weeks to make sure they are disease free. Once you are satisfied they are ok they can be added to your main tank. Some people use QT, others don't.
Any time a fish is moved from one tank to another it has to be introduced to the tank by acclimating it properly.