So my tank is is mutilated with scratches from the previous mbuna rockwall along the back of the glass. It is not just a few scratches, it looks really terrible and distracting. Only thing I can think of is to get a new tank which would be a pain and cost money. Is there any way to hide this short of a 3d background that would involve a black background on the inside of the tank using some kind of paper? Maybe painting a piece of plexi glass black and inserting it on the inside? It has a centre brace so I don't even know how I'd even be able to get it in there. Painting the inside since there are already fish in it is not doable ofcourse. Any ideas?