Hello folks, Possibly a bit of a random question here, but here goes. I've recently acquired myself a 640 litre fish tank that I'm planning on putting in my living room. I completely neglected to consider the weight of the thing before buying it, and I'm wondering if my floor will hold it. Unfortunately the living room is the only downstairs room with a wooden floor. The tank is 6 foot wide with a flat base rather than legs so the weight would be distributed over 4 joists (I think they're 16" apart), and it would be up against a solid brick wall between me and my neighbour. To further complicate matters, on the opposite side of the room which is 3m wide at that point, there's a piano and an organ which are close to 200kg each. So, is sticking another 700kg (ish) on my floor going to make it collapse and flood my house? (I suspect it will!) Any advice appreciated, Andrew.