SunPurity Silver Ion Cartridge
Auto-Ship Hot Tub
Insert the SunPurity Silver Ion mineral cartridge into the bromine dispenser of your Sundance spa filter area & the silver ions are released automatically reducing your need for chlorine! Simply replace your cartridge every 3-4 months.
Sign-up for our Auto-Ship Program and have a new cartridge automatically shipped to you for FREE via US mail every four months! All you pay for is the cartridge plus tax (where applicable!) 
Download and submit the Auto-Ship Form here!
*This product is made especially for Sundance Spas. Find the Silver Ion Cartridge for Hot Spring, Caldera and other brands here.