Hey Everyone, I am new here, but not new to the fish world. I used to breed electric Blue Dempsey’s back in the day. I have however been out of the game for a while. I recently got a 55 gallon off Craigslist for a great which included the stand, lights and various other things. I had set it up and went to put my background on today when I saw what looks like two cracks in the glass... I guess my question is should I be worried about them or keep the tank setup?