There's a thread in the New Forum on the salt myth. You might want to read it.NorthStar said:I would not reccomend it Either Aquarium or canning salt.
Table salt is fine, but you need to get your hands on an anti-bacterial as ashdavid suggested. IMHO I prefer them in "pure" forms rather than buying something with a fancy name and other additives. Many LFS sell tetracycline and other anti-bacterials in tabs and liquids.
Roan