Well, checking the place out is a must. You want to place the tank along a load supporting wall. This will ensure that your floor will be more then strong enough. You also want to place your tank perpendicular to the direction of the floor support.
Just to give you an idea, I have a 180 on the 3rd floor of an apartment. Hopefull all stays okay been okay for a few months now. But then again, I have it against a load bearing wall. (just incase, load bearing wall = outside wall of apartment, or wall you are sure has suficient support since a 125 gallon tank can weigh 1,250 pounds easy) Other then that I would not worry too much about it. Floors, even in apartments, are quite strong.
~Dj
Just to give you an idea, I have a 180 on the 3rd floor of an apartment. Hopefull all stays okay been okay for a few months now. But then again, I have it against a load bearing wall. (just incase, load bearing wall = outside wall of apartment, or wall you are sure has suficient support since a 125 gallon tank can weigh 1,250 pounds easy) Other then that I would not worry too much about it. Floors, even in apartments, are quite strong.
~Dj