I moved the tank to get a better angle or it would have been impossible to get an underside picture.
There is only 10 gallon in it to test the seal, not the glass
There is only 10 gallon in it to test the seal, not the glass
F FJBThis is what I would do if I were in the same situation-
I would cut two strips of glass, perhaps about 1.5-3 inches wide, and 3 or so long. I would silicone one on the front of the tank and one on the side, flush with the bottom pane, and glued to each other at the angle where they meet. I would then test the tank (fully filled) for a while, in a non-threatening place (basement, outside, etc.).
If it holds, then I would feel good and would forget about it. Perhaps this side of the tank can be used as the back, if it is not drilled, scratched or sometime else. I would not just trash the tank right away or assume i8t will not hold water.