According to
this link, the Arm & Hammer Clear Balance tablet has the following ingredients:
Sodium Bicarbonate ....... 86.60%
Clarifier and Other Ingredients ........ 13.40%
It is essentially a compressed tablet form of baking soda plus a clarifier. It would mostly be used in pools that use Trichlor tablets/pucks and run at higher TA such that the pH is relatively stable but where the TA would otherwise be slowly dropping over time.
It's not appropriate for a BBB pool (i.e. one using hypochlorite sources of chlorine) as the TA tends to be relatively stable in such pools. In a saltwater chlorine generator (SWG) pool where acid is added regularly, then over time TA will be needed as well, but it is MUCH better to test for that and add baking soda as needed rather than rely on a tablet that dissolves at a rate that you don't really control.
Richard
Bookmarks