Fi-Clor Tri-Tabs.
25kg Fi-CLOR TRI-TABS are specially designed and packed trichloroisocyanuric acid tablets for use with circulatory feeder units, for disinfection of public and semi-public swimming pools. For smaller pools, the tablets may be dosed by placing them into the skimmer basket. Tri-Tabs contain a built-in stabiliser, making them ideal for outdoor pools where loss to sunlight can be a problem.

Instructions
> Test water daily using a pool test kit. Place Tri-Tabs in tablet feeder. Never place tablets in direct contact with pool surfaces.
> Do not switch off the unit while it is charged with Fi-Clor Tri-Tabs and ensure that the tablets within are always covered with water. If it is necessary to cease use of the feeder for any period, the tablets should be allowed to dissolve completely before shutting off the units.