You can acclimate him the way you would as if he were from the store, or you can do what I did this week when I took my canary wrasse out of QT. The day before I moved him, I did a 40% water change on the QT tank using water from my main tank and then when it was time to move him I just made sure the salinity and temperature were a match and took him from one right to the other. He's happy as a clam today with all that room!