No, there is no need to replace anything regularly with the saltwater system. However, it is important to keep the electrode clean, the cleaning procedure can be found in the user manual. The life of the electrode depends on the quality of the water, the frequency of use of the pool and how often and for how long the saltwater system is turned on. The saltwater system is equipped with a self-cleaning function that extends the life of the electrode. Make sure that the self-cleaning program is turned on. The QS 200 model has the self-cleaning program turned on automatically. For other models, you need to select a mode. The self-cleaning program can be turned on continuously. For hot tubs, you only need to check occasionally whether the electrode is clean. The check should be optimally carried out when the hot tub is empty, for example when changing the water or before storage.