HTH Extra Duration Chlorinating Pucks helps to control bacteria and algae in swimming pool water by slowly releasing non-stabilized chlorine to your pool. This product is an alternative to the standard 3″ chlorinating pucks and does not contain Cyanuric Acid. With HTH Extra Duration Pucks, you’ll have a steady source of chlorine in your swimming pool.
Use in a skimmer basket only. Do not place directly in pool. DO NOT place in skimmer baskets which contain undissolved material from previous used tablets. Do not add other products into the skimmer while HTH Extra Duration Chlorinating Pucks are present.
Directions: Add tablets into skimmer on a weekly basis according to the table below:
| Pool Volume | Duration Pucks Weekly Dosage |
|---|---|
| 20,000 L | 1 Tablet |
| 40,000 L | 2 Tablets |
| 60,000 L | 3 Tablets |
| 80,000 L | 4 Tablets |
