Blue Mano Chlorine Floater (V2.0 Upgraded) for 3 inch Tabs with Refill Warning, Durable Design, 7 inch Large Dispenser for Inground and Above Ground Swimming PoolBrand: Blue Mano Features: [Durable Design] Unlike other dispensers, your tablet dispenser features thicker walls, and will last in your pool. [Alerts You When Chlorine is Low] Stop checking if the chlorine tablets need to be replaced. The Blue Mano Floating Chlorine Dispenser will notify you when there is less than 1 full 3 inch chlorine tablet left with a red pop up indicator. As soon as you replace the chlorine the pop up indicator will go back to