Perform-Max offers the flexibility of using either chlorine 1″ tablets or 3″ pucks or bromine tablets. The above ground model holds 7 pounds. Set the dial to maintain the industry standard 1-3 ppm of chlorine or bromine and refill when empty. For bromine users, bleed the air to create a soaking environment that works best with bromine. Perform-Max's greater adjustability with 9 precise dial settings and an erosion design that wets only the bottom layer of chlorine along with it’s durable craftsmanship make it one of the top chlorinators on the market.