Natural alternative to harsh chemical sanitizers.  Patented mineral-bed technology destroys bacteria.  Improves look, feel, and smell of spa water while reducing eye and skin irritation and dryness.  Works with existing filtration system (simply drop into your filter).

Dosage:   One cartridge sanitizes up to 500 gallon and lasts up to 4 months.

Ingredients:   Metallic silver . . . . . . . . . . . . . . . . . . . . . .   0.92%
                      Other ingredients . . . . . . . . . . . . . . . . . . .  99.08%