You may want to look into saltwater fish only and reef to decide on your live stack as well. I'm no expert only been in the game for a few months but I suggest a the book saltwater aquariums for dummies before you take to many strides. It will answer a lot of questions and give you a general idea of what your in for. I think angel fish are a bit territorial and unless you have a massive system may benefit in a fish only tank. But your going to need to research that a bit. That book also gives you a generally idea of what fish are more aggressive. I have heard some say you can get away with a hob
skimmer in a fish only tank but if you plan on keeping corals you might Your going to need a sump to go under your stand to place your protein skimmer and a number of other pieces of required equipment. Just don't go out and by anything until you really do your research or you'll do what I did and you'll pay trust me.
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