MegaChlor MEGACHLOR Above Ground Pool Salt Chlorine Generator 110/220V is a semi-automated, saltwater chlorine generation system specifically designed for pools and swim spas up to 17,000 gallons. The cell simply hangs over the side of the pool into the water and the pool does not have to be on when the MegaChlor is making chlorine. The system has a removable electrode for installation in-line and cleaning. With optional chlorine detection, salt level indicator technology, and boost mode you have the option of easy chlorine production and manual overrides.