I have to agree with iceburger i also work at a lfs and with my 30% discount i could not get that deal buy it any way possissable trust me that is an excellent deal.:D :D
Im sorry but I have to agree with everything that sammy told you insted of putting big fish in such a small tank get a bigger tank like a 90 or 125 something around there and the spend the money on the fish you really want. this way they will have enough room and you will not be critisized by...
the tang gets along with just about anything
and to feed the tang it eats SEEWEED SELECTS or any macro alge, FLAKES.
The powder blue is a great fish but hard to care for you need great water conditions.
Do the water change. if your tank is only 2 months old and the tank cycled quickly you could experiance mini cycles for up to a year. if this accures again keep a bottle of amo lock beside your tank this nutrilizes the amonia and will not harm anything. Good product to have just in case of...
in my oppinion you might want to get a juvie emperor untill it out grows your tank get rid of the pork puff and get a blond naso tang. with the clowns and live rock. or if you really want the adult emperor upgrade to at least a 200gal. thats the only way i see it working.