Hayward 9lb Off Line Bromine feeders are ideal for new and existing pools. They work automatically with the system’s recirculation pump. Efficient and maintenance-free, these feeders provide a durable and corrosion-proof means of automatically maintaining proper santizer levels. All tablets are comprised with a certain amount of binding materials. Binders are used to convert the chemical into a tablet format. Using the purest form of chlorine/bromine will ensure less build up inside the chlorinator/brominator. Ultimately, this will extend the life of your vessel. All units incorporate a durable ABS body along with a high quality Viton® seal, and an ergonomically designed cover to allow for simple lid removal. Consult your local Boldt Pools and Spa Retail Store for chlorine/bromine options.