http://www.african-cichlid.com/Structure.htm
125 is pushing it, if your floors have any damage or even a knot in the supports you run a very likely risk of a collapse.
40lbs per sq foot is the standard at what homes are built. a 125 gallon is WAY over that load limit, and sheer is a strong possability being it's so heavy.
I'd read that site, get a decent understanding of the risk you're taking and call a structural engineer. You'll be spending tens of thousands of dollars to fix your floors, walls, and the apartments below yours walls, floors, and maybe the loss of someones life if it falls on them.
125 is pushing it, if your floors have any damage or even a knot in the supports you run a very likely risk of a collapse.
40lbs per sq foot is the standard at what homes are built. a 125 gallon is WAY over that load limit, and sheer is a strong possability being it's so heavy.
I'd read that site, get a decent understanding of the risk you're taking and call a structural engineer. You'll be spending tens of thousands of dollars to fix your floors, walls, and the apartments below yours walls, floors, and maybe the loss of someones life if it falls on them.