Another option is to use rubbing alcohol if the sticker goo is on the
outside of the tank but make absolutely sure none of it ever gets into
the
water. Good luck and I like SRB's answer best so far. Later!

"Bill Stock" wrote in message
...
I stuck an LCD thermometer on my Betta tank, but it was a dud. I
should
have realized when it did not "light up" that it was a dud, but
I've
never
had one of these on a an aquarium before. So I purchased a
replacement
and
tried to remove the old one. Well the outside layer peeled off and
the
black numbers stayed stuck on the glass.

Any easy non toxic ways to get this off, razor blade, ice cube?

TIA