My sole reservation with that study from the Canadian university is that
it was regional. Big problem in my view. If they had taken samples
from aquariums world-wide, it would be much more convincing. As it
stands, none of their tests were conducted outside of the three or four
Canadian cities. The research is very forthcoming with this
information, citing exactly where each sample was taken in a well-formed
table. The research does not, however, seem to admit or even surmise
that the regional nature of the study could have narrowly affected its
results.
I remain convinced of the veracity and accuracy of the claims, but I
want to see a much broader scope of control. You know what I mean?
pH7, Aquarium Ninja