Quote Originally Posted by rdbrya1 View Post
Do they make a chlorine tablet that just simply adds chlorine?
Sams Club sells "PoolBrand" tablets that are undiluted trichlor. These Kem-Tek tablets are 95% trichlor, which is better than most:
Kem-Tek 3-Inch Chlorinating Chlorine Tablets for Pool and Spa

Kem-Tek's MSDS doesn't list the 'other' ingredients, but I just talked to one of their techs, and she told me it's boric acid, which is fine. She also told me that they are now producing Kem-Tek Power 99 which is undiluted, and will be available on Amazon later this season.