by lou zello (525) ?? Sun Nov 04, 2012 5:39 pm only my opinion but from the photos it looks like the glass just chipped.if it is not leaking i would leave it alone.5.5 gal dosen't apply a lot of pressure so i do not really think it is going to be a problem other than not looking good.if you do not like the looks of it and you can do it without much trouble turn it around during a water change so it is