HTH 2 lbs. 7-in-1 Pool Sanitizer Mineral Brilliance Chlorinating Granules

This is an effective, 7-in-1 sanitizer product that sanitizes, clarifies, and helps prevent algae. This enhanced formulation contains a built-in clarifier, water softener, and scale preventer. It is convenient, easy to use, and won't over-stabilize your pool. Finally, it provides Visible Blue Action, so you know it is working.