Re: Quarantine tank setup.
I would say that you need to cycle your qt as well before you put any think in there...get a couple of small live rocks from your lfs and give it a week or so to cycle adding a couple of fish that are resistant to ammonia and nitrite poisoning.
Any of the Cromis family will do like Green Cromis, lighting Cromis, Blue Reef Cromis, Black and Gold Cromis, or Purple Cromis.
Monitor the ammonia and nitrite levels with a monitoring kit each day for the first couple of weeks.....this will be the same for your main tank as well.