So, I've narrowed down where I would like to buy my tank to two companies. I'm still trying to decide between a 75 gallon or a 90 gallon tank. I have a pretty good idea of what I would like in my tank....but I guess that's a discussion for another day. I do want to know if its paramount to have a tank stand, or can I use a table? Also, do stands come assembled or can I request that its not assembled? I live in a 3rd floor walk-up, and I really can't fathom trying to get an assembled stand all the way up stairs.