There are no other tabs for chlorinators other than trichlor.

Regarding how often you would have to add liquid chlorine or bleach depends on your CYA level and a lot of other factors so I can't tell you specifically.

Do you have a test kit? If so, what type? It might be, depending on your CYA level, that you could get by with adding bleach only 1 or 2 times per week.