PRODUCT OVERVIEW Long-lasting chlorinating tablets. Slow dissolving 6-in-1 formula. Kills bacteria. Controls algae, prevents corrosion, scale and metal staining. Makes water silky smooth. Includes built-in stabilizer to protect chlorine from sunlight degradation to last longer. Skimmer, feeder or floater application. Product Details Color:White Compositions:Trichloro-S-Triazinetrione Boric Acid Form:Solid Net Content:12 lb Odor/ Scent:Chlorine Package Size:12 lb p H Range:3 to 3.5 Relative Vapor Density:0.88 to 0.96 g/cc Size:3 in Features Controls algae Prevents corrosion and scale Kills bacteria Removes organic contaminants for clear water Makes water silky smooth Protected against sunlight to last longer Slow-dissolving 6-in-1 formula