Complete Salt Chlorine Generator System with Built in Timer for Hot Tubs & Swim Spas 2000 Gallons 13592880Dual protection of health and environmental protection Compared with traditional disinfection methods, the biggest advantage of salt chlorine machines is their environmental friendliness and healthiness. This method reduces reliance on chemical chlorine disinfectants and lowers the risk of using and storing chemicals. At the same time, the chlorine content generated by the salt chlorine machine is more stable and mild, greatly reducing the irritation