I feel you pain. I did the exact same thing about eight years ago.Lost a lot of books but was quick enough to save my Fathers log books. Water went straight through the ceiling and into the dining room and kitchen. I was not popular at home for some time to say the least. To anyone thinking of keeping fish please get a proper stand and the latest style “floating base” fish tank. For those who don’t know what that is. It is a tank that rests on the four sides only and the base does not touch the stand. I was far from sure about this at first but thats the new thing and it works!