Ok, I don't even HAVE a set up yet, but what if, in the future, there is a problem and i'd need/want to take the whole thing apart? If I use Great Stuff to make a background, how would this be possible? And if I put the Great Stuff on top of the false bottom, then wouldn't I not be able to remove the false bottom either? Has anyone here had a problem where they needed to tear down the whole viv? And in such a case, were you able to save the aquarium?