So I recently broke down my 75G reef tank in order to go back to freshwater. After spending an hour and half scrapping all the coralline algea out of the tank I carried it about back to hose it out. After I hosed it off and brought it back in I noticed a small chip. The deepest part of the chip is about as thick as the thickness of a finger nail, but most of it is as thin as a sheet of paper or thinner. The chip is on the edge of the front piece of glass about 3/4 of the way down. Let me know what you guys think.