Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
I use a single edge razor for glass tanks, handled VERY carefully so it does not dig into the silicone. (I leave a dirty band rather than get next to the silicone).
I do not get good results with magnetic cleaners.
Long handled scrubbers are OK if it is soft debris.
Most of my tanks have Otos or Plecos that pretty much keep things clean.