i rent at a house that was built in the seventies. I occupy the sencond and third floors. My ? is: will the floors hold the weight of a 90gal tank? There is a fire place that runs threw the center of all three floors. Should I place it behind it? There is really no slab to place the tank on. All the floors in my place are above rooms downstairs. Does anyone have any ideas about where to put this thing? I'm planning on having 90gal reef with 30 gal sump. Plus the stand weighs about 150lbs.