with a name like that, shouldn't you know the answers to everything already????
Just kidding, welcome to RC. Michael is right, it depends on the type of system you plan to keep, or are keeping. Certain systems like SPS corals need HIGH turn over. Other Soft Coral systems can be run with very little turn over (~10x and hour), and do fine.
So send us a little more info about your system and what you're keeping or plan to keep.