Sorry to see your loss and the destruction caused to your home. In the picture of the stand, aside from the bottom support being one inch away from bottom of the tank, it also seems that they put 2 bottom supports toward the center of the tank. Having engineering and construction experience, it appears that even if those support were up against the bottom of the tank, they still failed to support the outter parts of the tank. There should have been one more piece of wood support on either side of the existing 2 center supports and the edges of the tank, to ensure even weight distribution.
This appears to be poor planning and construction on the LFS side. Again sorry for your situation!