i basically spent the whole day researching on saltwater aquariums and how to start one. im new to this hobby and what really confused me is what to get when it comes to a filter. i decided to get a protein skimmer. now thats decided, i have no clue on what to get because theres so much to choose but are really expensive. im looking at spending not more than $100. please no flaming, i am really serious in making this work. thanks in advance.