My tank is a 65 gallon in wall corner tank. Before installing the tank into wall, I painted the back and side glass black as the room it sits in is considered my fish room/storage area. Anyway, I rarely clean the back glass off as I'm trying to build up coralline in the tank. When I look at photos of other tanks, it appears they always have coralline on the back wall or some other sort of algae built up. Should I be cleaning my back walls?


about not having contrast between the fish and the coralline in open water.


