One of the fastest growing accessories in the swimming pool and spa industry are electrolytic chlorine generators (ECGs), which also go by the name of salt chlorine generators (SCGs), saltwater chlorinators and saltwater generators. They all do the same thing—produce chlorine onsite. The popularity of this sanitation method is increasing in both the residential and commercial pool/spa markets; however, there is a lack of understanding in terms of how these systems work, how they are maintained and how to properly diagnose and troubleshoot a system to ensure successful operation year after year.