GLB® Large 3" Stabilized Chlorine Tablets are slow-dissolving, 8 ounce tablets used for continuous disinfection in swimming pools. These 99% stabilized chlorine tablets (trichloro-s-triazinetrione) offer 90% available chlorine for effective sanitizing. Tablets can be used in floaters, feeders or skimmers. 
Features:
Ideal for use with floaters, feeders or skimmers
Stabilized to help prevent UV degradation from sun light
Applications:
Normal:
See label instructions for complete directions 
Advantage:
Tablets dissolve slowly and at a uniform rate, eliminating the need for frequent hand feeding of granular or liquid chlorine.