Hi everyone... Thanks for the advice.
I am 200% certain that the scratch was there when we took the tank home. I didn't feel the need to inspect the glass before taking the tank home since it was shrink wrapped so my mistake here
The scratch is located in the top right corner just probably 2 inch below the eurobrace.
I know it's just a scratch but it will bug me to see this for the years to come...
I will try to contact the store today and see what they say.
Will keep you posted
Thank you all