Under certain circumstances it may seem like the lower panel is changing structure and is getting lighter in places. On closer examination we have ascertained that this usually is caused by a kind of algae, this means small insect eggs, which are laid in the dents of the material. If you look at these through a magnifying glass, you can take off the egg with a needle point. However the best way to remove these is to use AquaTex impregnator spray and wipe off with a soft cloth maybe together with a soft brush. AquaTex impregnator also counteracts future attacks. The “algae” appears both on PVC/polyester and acryl, but is more obvious on a PVC/polyester background. | 
