Vian 1kg Chlorine Tablets for Hot Tubs 
 
These Chlorine tablets are ideal for continuous dosing of your spa, to produce free active Chlorine which kills bacteria and other potentially harmful organisms.
 
These tablets are designed for use with Chlorine feeders/floating dispensers. Always follow manufacturers instructions
 
If the sanitizer is being changed from Bromine to Chlorine you will need to drain spa first and clean to avoid mixing chemicals.