Nic;744731; said:its real good for stress relief
What it actually does is aid with osmotic regulation in freshwater fish as their body tissues hold more salt than the water they are in, to maintain an equilibrium (homeostasis if you wish) requires a metabolic investment (energy). If there is a SLIGHT salinity to their water ir reduces the energy expenditure required (stress). And of course, when used as a treatment as opposed to a prophylactic measure, it works synergistically with most (but not all) medications, off the shelf and prescription.