GAME 4002 Derby Duck Floating Pool Chlorinator Keeping your chlorine pool properly balanced with the right levels of this vital pool chemical has never been more beautiful. The GAME Derby Duck Pool Chlorinator is an adorable way to keep your pool in-ground or properly chlorinated. Supports up to six 3-inch chlorine tablets (not included). This pool water treatment chemical dispenser has been designed with a handy expandable basket and dispensing rate.