SpaGuard Rapid-Dissolve Chlorine TabsSpaGuard Rapid Dissolve Chlorine Tabs is a highly effective formula that will kill bacteria and correct hazy or cloudy water problems. This product combines a blend of a powerful sanitizer with water clarifiers and water enhancers to make the water clearer and softer while it is being disinfected. The Chlorine tabs also have special ingredients added to aid your filter in removing small suspended particles in the water to help make it even more clear.