My 46 has the following, I admit its a little overstocked, but it has been this way for 2 years and I have had extremely good luck. Nitrates, Ammonia, Nitrites, and PH all stay in their proper ranges, providing I do weekly water changes (5 gal). I can let things go 2 or 3 weeks without a waterchange, but I normally try to avoid that.
Anyways
46gal Bowfront
2 cleaner shrimp
2 peppermint shrimp
Yellow Tang, Adult, Raised from a baby
Blue Tang, 6 or 7", raised from the size of a quarter!
6 Line wrasse
Psychadelic Mandarin (60 lbs live rock, plus he eats prepared food twice a day)
Zebra Goby
Banghai Cardinal (fun fish, always out lingering)
Perc Clown
I must say I advise against the Blue tang, he was good as a baby and looks fine now, except the tank is too small for him. He doesnt cause any problems, and gets along with everyone so hes staying for now. Within the course of 6 months Im moving and getting a 125, he will move to that tank so please dont get all flamey on me!
With water changes, skimming and good filtration you can achieve good results long term.
At its max, this tank also had a Wantanabei Angel (for 10 months) but he was found dead a few hours after I fed him the other day. I couldnt find any cause, but his decomposing body had a fireworm (positive its not a regular bristle worm) in it. I removed the worm and wonder if he attacked the fish and killed/stressed him.