chipped

Hi! I joined to ask this community about this crack because it worries me. It cracked like 6 month ago, and it didn't get any worse, but i was thinking about repairing it with silicon, would it help?

Recently I noticed that somehow my 40 gallon tank had gotten a small chip in one of the corners. Though the chip was small, I didn't like having the sharp edges exposed. I set about trying to remember what sort of abrasives I had around the house with which I could smooth the glass out. The...