Call me crazy, but I enjoy sticking my arms in my tanks. I bought one
of those plastic dish scrubbers (made sure it did not have any added
fungicides and stuff) and daily clean the inside glass. For me it is
relaxing but I could see how a razor would be good for stubborn spots.

Vicki

A good BH&G tip for using any sponge is to put it damp (use tap water to
rinse out all salt water) in the microwave to kill any bacteria that
could be harmful. Two minutes is all it takes.