Who in here has a 55 gallon reef tank?

I'm planning to set up a 55 gallon reef tank and I want to know what equipment do i need and also i heard that a sump is Better because there is where a protein skimmer is placed and some other Equipment so if there is someone in here that has a 55 gallon REEF TANK that can tell me all the Equipment you have from test kits to filtration i would appreciate it very much.