Just place a tab in your pool skimmer to destroy bacteria and organic contaminants without adding additional cyanuric acid (CYA) to the water that can lead to over stabilizing your pool. HTH Blue Sparkle Skimmer Tabs feature an innovated patented technology that provides long-lasting, slow-dissolving chlorination without adding extra cyanuric acid (CYA). Use only in skimmer and skimmer basket. Skimmer basket should be free of all other water treatment products before adding the recommended number of HTH Blue Sparkle Skimmer Tab(s). Place skimmer tab in the empty skimmer basket. Use one tab of the product per 10,000 gallons of pool water. After one day of use, test free available chlorine residual. Do not enter pool until the free available chlorine residual is 1 to 4 ppm (parts per million).
Destroys bacteria and controls algae
Lasts up to one week
Compatible with all pools
Use in skimmers
You're all clear with HTH