Possible Glass Separation?
 

It's been a long while since I've been here. I moved back to Oklahoma from Alabama and decided to restart my old Oceanic 55 gallon aquarium. It's currently cycling. But I noticed something a little disturbing to me and would like some advice. I don't know if this was there before but it's there now. It looks like there is about a 1 inch long but very narrow strip between the side pane and the front that appears to have what looks like possible separation. It's almost halfway between the top and the bottom of the aquarium. When I set it up a few year ago, I re-siliconed the inside very well. It doesn't leak but I would hate for it to come apart on me. I don't think it's cracked anywhere but there are a few minor chips on some of the edges. Do you think I should be concerned? I marked it with a piece of tape to see if it grows in length. I attached a picture of it. Thanks!

personally I wouldn't worry about that at all..
But a new 55G is only $55 (when the dollar a gallon sales are going on)..