When you say salt, do you mean marine salt, or aquarium salt?
Aquarium salt is generally used for remedies, and "reducing stress". An abudance will make fish have shorter lifespans though, and some Tropical fish will not tolerate salt levels in their water.
Marine salt is used for raising SG and salinity levels. This would be used for Brackish fish and Saltwater fish. Tropical fish will not tolerate this at all.
The only "tropical fish" I can think of that does very good with salt are Mollies.
Not entirely true. And I don't see any, nor have I found any, sound basis for the opinion. I research the statement for couple of hours before posting.
Most fish must have some minerals and dissolved salts in their tanks. Even waters containing tannins and having an acidic chemistry have some dissolved minerals and salts. Not having salts and other minerals in your water would be like placing your fish is unmodified RO water and that is not good.
Although most fish do not do well, even to the point of not tolerating any saline conditions at all, some degree of mineral salts are found in all water. Some micro nutrients are absorbed by the fish from the water. Some of these elements help to maintain the fishes electrolytes. Electrolytes maintain and regulate the metabolism and general health of any living creature.
Aquarium salt is used widely in the hobby as a treatment for some diseases. It must be said, though, that there are many scaleless fishes, and some with scales, too, that will not tolerate salt in any form, care should be taken when using it. Although they may tolerate the medication, they may stress from it too. I'd guess in such a case that the term tolerate is a relative term. Let's just say here that the treatment can be almost as bad as the disease itself. Almost. A little stress would be better than death, one would guess.
thanks for the info the lady tried to sell me a big old bottle You would have to put a very minute amount I still think she was just trying to get me to spend more money :x :lol:
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