Hi everyone. I was just getting ready to plasti dip the back of my new 75 gallon tank when I noticed this little scratch/crack on my tank. It's located on the inside of the tank, back left corner near the bottom. I can feel it when I run my finger over it but it doesn't look like it goes deep into the glass when I look at it closely with a flashlight. Is it a scratch? A crack that will get bigger? Will it cause any problems? Is there anything I should do about it such as a patch or sealant if there's an option to do that? I'm just a bit paranoid about a worst case scenario happening in the long run.
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