New tank stand

[Rikko]

Gary's right (sorta).
The real meat of the silicone that's holding your tank together is in between the glass plates. The little flaps you can see in the tank aren't doing too much. If you cut all that off, the tank would very likely still hold water (so goes the theory, lord knows I wouldn't tempt fate). But if you can cut away the visible stuff (don't dig the blade in between the glass plates!), prep it with some acetone or alcohol to remove skin oils, and reseal it with silicone, you're not really repairing the glass joins, but you're creating a perfect moisture seal for that small leak you currently have.

That leak you have *does* mean that your tank has a structural weakness, but I wouldn't think that a tiny separation of the silicone is something to be too worried about. Long term? Hmmm.