Aquaggedon?

The fish tank has spring a leak. After some serious mopping up and topping up this morning, and leaving some strategically placed bowls and towels, I was fearing the worst when I got back from work tonight. But all was well, the downstairs neighbour hadn't been flooded out. Yet! It still seems to be leaking! Not too sure what to do about finding the leak; a fish evacuation may be needed.