Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
Neither smell like lemons, either. More like a 'medicinal-herbal' smell. Sort of like Eucalyptus or Camphor.
I happen to like that smell, but do not want it in all the tanks all the time. As it is my tanks have no odor unless I am standing right over them. Then it is slightly earthy.