True, there are anti caking agents present that can be harmful to fish. But as Happychem points out, for aquarium dosages, they are found in quantities less than that acceptable for natural streams and water ways by the EPA.

Of course, this is just information being passed on for review. The debate of weather mollies need brackish water or hard FW would have nothing to do with sodium chloride.Happy said:From the FDA website: http://www.accessdata.fda.gov/scrip...=21:3.0.1.1.3.5
Quote:
Originally Posted by FDA re: YPS
(b) The additive is used or intended for use as an anticaking agent in salt and as an adjuvant in the production of dendritic crystals of salt in an amount needed to produce its intended effect but not in excess of 13 parts per million calculated as anhydrous sodium ferrocyanide.
So if YPS is used as an anti-caking agent, the amount of YPS in an aquarium treated with salt containing YPS would be no greater than 13 ppb (parts per billion)
The maximum allowable concentration - by EPA regs - in streams is 2 ppm based on fish toxicity. While toxic exposure levels vary greatly from species to species, if one has faith in the EPA, 2 ppm should be the maximum safe level for the most fragile species. Now if we make the leap from temperate species to tropical species and assume the same limit, we see that the amounts in our aquaria would be less than 20 times lower than the maximum allowable limit.
