Is the salt used in a saltwater swimming pool the same as a water softner?

You can use either type of salt, but the salt for pools is better because it dissolves very quickly. 40 lbs bags cost around $6 at major home improvement chains. It is highly recommended to use nothing but pool salt for chlorine generated pools. YOU CAN NOT USE "EITHER" TYPE OF SALT!!! To save a few cents per bag of salt will cost you an arm and a leg in repairs to damaged equipment ( salt generator). Swimming Pools and related equipment do not do well when you cut corners on cost. You may be able to do it on a few items but in the long run it will end up costing you more. USE WHAT IS RECOMMENDED BY THE MANUFACTURER OF THE SALT SYSTEM !