"David J. Braunegg" wrote
Is the jury still out on the addition of salt to tanks, or is there an
agreed-upon answer?

There is no agreed upon answer. That is the case
in many aspects of fish-keeping.
Salt can be useful in certain circumstances.
As a dipping solution for instance. I no longer
use it as a general additive to my tanks, even for
live-bearers. I would never add salt to a tank with
Cardinals.

There is much information he

http://www.skepticalaquarist.com/docs/health/salt.shtml

--
Graham Ramsay
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