Nature2 CF Replacement Cartridge W29500 mineral pool sanitizer uses copper and silver to destroy microorganisms, bacteria, and non living organic waste.

Turns your cartridge filter into a mineral sanitizer
Destroys bacteria
Reduces chlorine use in pool
Environmentally friendly
Fits most cartridge filters
Requires no electricity, no extra costs
Improves water quality
Controlled Release Technology (CRT) ensures optimal mineral levels and no staining
Available for pools up to 25,000 gallons
Cartridge lasts for 4 months

Nature 2 - W29500 CF Replacement Cartridge