Well . . . the tank is really quite large in width and length, but only about a foot or so deep, so I don't think it will show up very soon - but maybe you'll get lucky. The good thing (also a maybe) is that since it floats, you should be able to keep using the tank and it may never try to flush out. I'd just keep on keepin' on and see what happens. Worst case would be having to drop the tank and fish the thing out by hand.
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