Currently working on a fish tank that I acquired and noticed this 2 1/4 in little mark on the bottom of the front glass. There is no problems anywhere else and I am doing a small reseal job on some of the old frayed silicone parts for good measure. My only question is if that little mark is something more serious? Tank has been running for years fine up until I acquired it and have been working on it. It has been a bit of a project so far since it needs a lot of TLC. Can someone tell me if this is a big deal?
***Eurobrace and full trim was also removed along with light holder because of how ugly those were for this tank. I have plans on what I am going to do in lieu of that being gone.
The outside mark is just left over residue from me removing the ugly trim on picture 2. Picture 3 is a current progress pic on what else is going on.

***Eurobrace and full trim was also removed along with light holder because of how ugly those were for this tank. I have plans on what I am going to do in lieu of that being gone.
The outside mark is just left over residue from me removing the ugly trim on picture 2. Picture 3 is a current progress pic on what else is going on.
