The Stone Granite colour background is a realistic image of a granite-coloured rock wall. The distinctive 3-D structure gives your aquarium a fascinating illusion of depth at a very low installation depth of just 1-3 cm. As part of the Stone Granite decorative range this colour background goes perfectly with the matching filter cover. The Stone Granite colour backgrounds are made of a highly condensed polyurethane coated with epoxy resin. If this complex production process makes it particularly easy to cut the colour backgrounds to size whilst providing an extremely tough colourfast surface.