Possible Scratch - or crack?

[macman7010]

Hello everyone ...

I noticed today what is either a possible scratch or crack in my red sea 130d. I was doing a water change/algae cleaning and noticed a spot where a short, (maybe half inch) line of algae was growing. Upon further inspection I noticed there was a recess signaling a scratch in the glass. When I put my finger on the spot I could feel a scratch in the glass. Should I be worried that this is a crack that will spread? Oddly enough it's right where I dock my hammerhead algae magnet which is super, super strong. Could sand have gotten caught in the magnet scratching the glass that much?

 

[Mrc8858]

It very well could have been sand stuck in the magnet but I wouldn't be worried about it failing (cracking) just from the scratch...if it is high enough up you could buffer it out slightly during a wc...unfortunately all mine are at the base of the tank lol