Spa Chlorine Tabs 20g are used for long-term disinfection of the water.
These slowly dissolving tablets of stabilized chlorine (Tri-chlorine) are excellent if the spa is no longer used very frequently. Spa Chlorine Tabs should be used to advantage in a float so that excretion can be regulated carefully, as otherwise tablets risk melting at an uncontrolled rate, which in turn can lead to unnecessarily high chlorine values.