welcome ! oh boy, you have no idea what you have done, and people say chocolate is addictive LOL. you will love having fish, you will soon realize that one tank is not enough. a bit of advice— craigslist has second hand tanks and not only that we are having a swap meet tomorrow!! I only have 2 tanks right now, that is all that I can handle BUT I really would like another one. I have a 20 hex which is only good for a Beta & that is whats in it , I also have a 90 gallon in the middle of my living room —who needs a couch anyway?? fish are much more interesting than stuffy old furniture anyway.So glad that your son is interested–who knows where that will lead??? Maybe a career in marine biology?????????????