Scratch on inside bottom of tank

[Rycraft]

So I just brought home a new 36 gallon glass bow front aquarium. While cleaning everything off I noticed what I think is a very long scratch on the bottom. 

It's in a curved shape and there is no spidering. I can feel it lightly on the inside of the tank but not on the outside. It's also starts and stops a few times which is why I think it's a scratch and not a crack. 

Will this effect the integrity of the tank? Should I bite the bullet and just drag it back to the store.  Aesthetically I could care less since it will be covered by substrate but the last thing I want is a year down the line to have a 36 gallon water explosion in my living room and all my fish die. Pic attached. Sorry, it's very difficult to get a good pic so not sure if it will help or not. 

Edited October 17, 2020 by Rycraft

[Rycraft]

Here's another picture where you can see how it starts and stops. 

[Dandy Pearl]

My question is, is it really a scratch? or simply a long 'mark' from moving the tank around? This is potentially equivalent to rubber leaving a mark on a surface.

Try cleaning it off first. If it is truly a crack, I would bring the tank back for a replacement. A crack is how glass is 'cut' to shape. It is scored with a sharp wheel, then snapped off. I wouldn't trust it, if it is a crack, even if it has not spider'ed.

Good luck with the tank!