the tanks are cool but yes thin IMO . one thing guys ,do you think that your tank is even close to large enough for a fish that used to live in the ocean ? before answering this question really think about it as most tanks are 8' or less in leingth . two flips of their finns and the fish is at the other end .lol . try living in a closet or a boot locker .the first is larger but is it comfortable ,i think not .