N2 Express Cartridge
Nature2 Express cartridges release silver and copper ions into your pool. The copper and silver kill bacteria and algae which maintains water quality and also reduces chlorine requirements.
Zodiac Nature 2 Express cartridges require replacement every 6 months and allow chlorine levels to be run at half the normal required levels. The lower chlorine creates a better swimming experience with less skin and eye irritations.
To change the cartridge simply unscrew the lid from the Nature 2 vessel and exchange the cartridges.