Spa Frog Filter Mate mineral sanitizer cleans and clears hot tub water inside your cartridge. By adding half the usual amount of dichlor or bromine, you'll kill bacteria two ways. Lasts 4 months.

• Mineral system
• Use up to 50% less chlorine or bromine

Product notes: Min. filter length 7"; min. filter hole diameter 1-1/2". Alternative to Nature2, Jacuzzi ProClear, Leisure Time Mineral Sanitizer, Caldera Monarch 72358.

Filter Frog Instructions