Hello everyone! I am contemplating setting up a SW aquarium. I've read most of the Fenner book, and have also read many articles on the web. I have never set up any kind of tank at all. I really want to set up a SW tank because they look so wonderful, especially when compared to FW aquariums. I'm not sure if I should start with a SW tank because of my inexperience with the whole thing. Should I start with a FW tank, even though I am really not too interested in FW, or should I just jump into SW? Right now, I'm only interested in doing a fish-only tank. Also, I was thinking of getting a 40G acrylic tank. Is that too small, or should I go with a 50G tank? Also, I have a friend that has a 30G SW coral setup and he doesn't use a hood. He leaves the top open and hangs his lights over the tank. Does this sound like a good idea? I like the idea of being able to look in the tank from above. It also seems easier to do water changes without a hood. Thanks.