Rainman that depends on the pond (its dirt and water). If the pond is high in chlorides in its natural state that might not be a good idea.
And it depends on how much salt you add. FWIW I think adding enough salt to a pond that would be detrimenal would be expensive. I.W. my .62 acre pond contains 1 million gallons. It would take a lot of salt to cause any kind of problem.
One thing to consider is if one does scatter salt granules in the water they can "burn" a fish on contact. It should be disolved as much as possible before adding.
