FEATURES: Poolwell Chlorine Tablets effectively keeps your pool water clean and healthy, make you fully enjoy swimming in clean and clear water in all season long PoolWell Chlorine Tablets not only applied to swimming pools, hot tubs, SPAs, but also to hot spring pools, water parks, even to toilets How to Use? Add 1 tab to every 10,000 gallons of pool water every other day or as often as needed to keep chlorine residual of 2-4 ppm. For best results, we recommend testing the chlorine level once a week. Increase dosage after heavy use, rain or high temperatures. Sun protected to longer chlorine life

• PoolWell Chlorine Tablets sanitizes and protects your pool water, make you fully enjoy swimming in clean and clear water in all season long.
• PoolWell chlorine tabs not only applied to swimming pools, hot tubs, SPAs, but also to hot spring pools, water parks, even to toilets
• Easy Use – Size perfect for floaters or any automatic chlorine feeder with 3-inch or bigger, 1 tablet treats 10,000 gallons of water for up to a week