I think that before any of us can give you any suggestions on it we willneed to know a little about your tank. How big, what type of filtration, what are you putting in it (ie. will it be fish only, or will you hve live rock, or maybe coral?). Anyways with a little more information about your planned setup we (more like the other more knowlegable people on the forum) will be able to tell you what you need.
Good luck and I hope that this forum can help!