PlanetCatfish.com

I never heard about any salt reducing stress - unless the stress comes from too few electrolytes in the water, in other words, too soft water

Fishes from the family Callichidae come from South America (1 species, Hoplosternum punctatus reached Panama, but there the water is soft too) where hardness is virtually absent or low. South America is larger than Amazonia, but the continent is not as rich in minerals as Europe or North America are. Therefore, if your water would need to be prepared for your Corydoras, it would have to be softened.

Cichlids from the East African riftlakes inhabit very hard water - and these may require hardening. Still, I would use seasalt, or normal rocksalt, and not some preparation from a company. That is both because of the price, and the fact that I like to know what's in the water.

I also think that if you were to analyze the Aquarium Salt you will find that it is essentially table salt - a bit more expensive.

Salt is indeed helpful in certain circumstances as a medication, but as Bas says, otherwise healthy fish do not need salt in the water to stay healthy, just like most humans do not need headache pills every day - when you need them, they do good things, but if you take them all the time, it's not longer term good.

--
Mats

Aren't Cory's fairly salt intolerant?

Rick

RickE wrote:Aren't Cory's fairly salt intolerant?

Rick

They sure are. Do not use salt with corydoras.