Oh yeah, don't put any fish in there until you can QT them. I see alot of people saying "If it's yer first fish it don't matter", but if your first fish has ich and is in the display, now your new display has ich as well. Start out doing things right. Get your QT set up and stabilizing, after that happens get your first fish and put him in the QT, and while he's in there, your clean up crew can be working on the upcoming algae phases you'll go through. About the time alot of that is done your first fish in QT should be ready to make the jump to the display. That's what I would do and have done.