How do you look after a salt water pool?

Saltwater pools are not seawater pools. Saltwater pools contain less than 1/3 as salty as seawater. What they use is a chlorine generator to convert salt to chlorine. This eliminates the requirement to add chlorine and other chemicals to your pool. The level of salt is approximate the same as softened water. The good side is you only have to add enough salt to replace what is splashed out as salt unlike chlorine doesn't evaporate.