so today i just came home from school and i usually clean my fish tank with the magnetic brush...but i didnt know that there were a piece of rock stuck on the outside and i wipe my tank so now there is a line that run across my tank =
mad:

:rant2:





does anyone know how to clean this off?
my tank is acrylic btw
does anyone know how to clean this off?
my tank is acrylic btw