Hi I am extremely new to reef aquariums as I have only had freshwater setups in the past and am in need deperately for someone to point me in the right direction. I have just purchased a four foot tank with external filter and a protein skimmer and also 1 light which holds two double fluros (each fluro has a blue and white tube), I also have testers, water additives etc. Firstly is this all the equipment that I need to get started as I have read that I may need powerheads inside the tank. Also would it have been more beneificial to get a sump? Secondly once I have the setup sorted out where do I start when it comes to selecting corals and fish bearing in mind I don't have knowledge of what goes with what. I don't have a great deal of spending money either and was planning on slowly adding more and more as I go along. Any help would be immensely appreciated.