Welcome to TRT! You might want to post in the "General reef discusion" as it gets most of the traffic on the site. This forum doesnt see alot of traffic. There is a ton of people who will be glad to help and give great advice to help you get where you want to be. First decision would be to figure out what you want to keep. The types of coral will influence some of the equipment needed. I know that anenomes like alot of light as do SPS and some
LPS coral. My advice would be to get the best skimmer you can, they are usualy rated for more than they are built to handle. Lighting is very important. For SPS, clams, some LPS and most anenomes metal halide is the ticket. This would bring some heat issues to your tank though. VHO is another type of lighting that is widely used ( I have 440 watts on my 55) It will limit you as to some of the coral you can keep as will PCs. What most people seem to going with is a quality skimmer and Live Rock. The LR will handle the
biological filtration and the skimmer removes disolved solids (waste) before it can break down and release phosphates and such into the water. A canister or other type of filter will catch the waste but it will be in the water untill you remove it by cleaning. Since the waste begins to break down almost immediately, this is not as good as removing the waste completely form your system as a skimmer does. Skimmer very important, investing in a good one will keep your critters happy on down the line.
Probably the best advice I could give you is to take your time and read and read some more. Hang out in "the general reef discussion" and " the think tank" and also check into the archives here. There is a wealth of information and experience to be had and everyone is VERY helpfull! But the patience thing will save you money and headaches in the long run. This hobby takes time to be succesful. I know a guy at work who didnt think it was neccisary and hes paying for it with livestock dying and algae problems. Ive been working on my set up for about 5 months and will probably add water in a week or two. But Ive checked and re checked with the folks on TRT and made many changes along the way and Im confident in my set up know that I have saved myself some problems from how I was originaly going to set up. Believe me, once you realy get into it the chances are good youll do things at least a little different!
So hang around and ask a bunch of questions and check out other peoples tanks. And again, Welcome to TRT!!
Robert