Re silicone my 90

[oilfieldsafety]

Well I thought that I should update this post. I ended up cutting the silicone our of the corners but left it where the panes actually but together. Then I scrubbed the glass with a scotchbrite pad and isopropyl alcohol, masked each joint and re-siliconed. The tank has been full now for a week, no leaks so far (knock on wood).