Yeah, I have read articles and message board post stating that QTing them is a must. So, I just assumed that most people did.
I have a 46 gal
QT tank. I have never used any medications in this tank. I was only planning on leaving them in the QT for about a week. Probably less now, since a lot of people don't think that it is necessary. I used some eggcrate to raise the corals high so that they are closer to the light.
I did find some kind of crab looking hitchhiker crawling on one of the corals. I don't know what it was but I removed it.