Couldnt we just make the myth that you can't have large aquariums in apartments because of the danger of them falling throught the floor. Then you just get myth buster to test ever increasingly large aqaurium on a structure made to apartment building codes with supporting walls as far apart as you would see in a typical common area of an apartment as that's the most likely place for a large aqaurium. They just keep increasing the size of the aquarium until they find one that will go through the floor. That would be cool to see. Start with say a 250 gal and go up from there and if standard dimensions don't do it once you get to 1500 gals then just make it taller. Maybe you are planning a wall tank and it will be 7' tall 14' long and 6' wide. That might just be enough to make your floor give way. I just want to see how big of an aquarium it would take to make a floor fail. lol