A floating dispenser should always be used for dosing either bromine tablets or chlorine tablets. The dispenser should be tied to something in the spa to prevent it being drawn into the spa skimmer.
See description for more advise
Always remove the dispenser before using the spa and store in a bucket away from children and pets
It should be noted that chlorine tablets will affect the spa manufacturers warranty as they are very acidic and will corrode fittings. If using chlorine tablets we recopmmend Spa Time tablets as they are pH neutral - see below
Note - Floating dispensers are not recomended for holiday rental spas or swimspas