Yes, common table salt contains sodium and the plants will take that in place of potassium, which is what they are commonly most deficient in, in an aquaponic system. They will also appear more succulent.Originally Posted by davidstcldfl
When people talk about adding salt to a tank, they are talking about sodium chloride or common table salt. I believe keith is making reference to additives found in different salt products, but the "salt" part of anything used is sodium chloride.