I have 2 percula false clowns, 2 bengaii cards, and a Diamond goby. I'm in a 28g NanoCube. 50 lbs LR and 20 lbs aragonite oolyte sand. All very happy together and parameters are excellent. Eventually (few months) all are moving up to the 65G.
+1 to all above!
I'm only 1 1/2 in the reef aspect. Listen to the people here! If you are just setting up, new tank, curing live rock and such, you won't be adding anything for at least 6 weeks until the tank fully cycles. My LFS forbade me to buy anything until I was cycled! Then the CUC's, then some fish, then some easy coral. My first two corals were a nice zoa and a red mushroom.
Good luck!