It's important to realize that an aquarium is an eco system. It is not like any other pet you can have. This is a world. In your office, lobby or livingroom. That's why it's important to hire a professional to at least get you started in the right direction. Learning by trial and error is not only very expensive but very taxing on the supply of these fish. So hiring a professional will not only help you prevent the usual pitfalls but actually save you money.