Alright, I'm going to interject here and please don't take this as a personal attack:
Why are you guys purchasing these fish before knowing what they are? Lions have a specialized diet and some are harder to get to eat than others, research should be done PRIOR to purchasing. From what I'm reading, a lion, unless it's a Fu Manchu, in a reef with small fish is not a good idea. You were kind of set up for disaster there. I'm also not a fan of purchasing a fish with hopes of upgrading, because yes, they are just hopes until the tank is up and running. Things can happen in a 6 month span that prevent you from having that larger tank. WAIT until you have the larger tank set up before buying fish that need to go in it. Yes, a month or two of quarantine is fine, but 6, that's not really fair to the fish. Would you want to live in an a 2' by 2' closet while your room was being built for 6 months?