Quote Originally Posted by matt View Post
Acrylic does scratch easily, but small scratches can be removed from inside and outside with the tank filled, as long as you can reach the scratch easily. You use a special set of wet/dry sandpaper called micromesh; it's 9 or 10 grits ranging from 1500 to 12000. It works perfectly, but it is a little labor intensive and there's a bit of a learning curve.

Thanks, good to know.