4 pack of Amerse Mineral Purifier, lasts 16 months
Amerse Mineral Purifier, lasts 4 months each, 16 month supply!
Use the power of silver to purify your hot tub water naturally. Silver is released into the water and unlike chlorine won't evaporate so you have another layer of protection to keep your water nice and clean. Replace after 4 months. Four complete cartridges included. That's a 16 month supply.