Since my tank is still pretty new, I haven't done much for quarantining. Just my two cinnamon clownfish. The other 3 fish I just acclimated straight into the main tank. If I get anything from Gold's that comes from the uber-medicated system, I'll definately quarantine it. You know, the system with the perpetually green water?
I would like to quarantine certain corals, but I don't have a proper setup with the proper lighting yet. I'm still very indecisive whether I'm going to tap the nano I'm putting together into my main system or not. Would make it way easier to maintain, but then I wouldn't have the peace of mind of a separate system just in case I need it... We'll see.