Zodiac W28125 Nature2 G25 Style Single Cartridge for Professional G Pro G Plus 

With Nature2, you are just a few simple steps away from perfect pool water, naturally.

Nature2 is perfect for pool owners looking for a nature-friendly, easy-to-install, and low-maintenance alternative to heavy chlorine or bromine to keep their pool clean and free of harmful bacteria and viruses. 

• Six-month Guarantee - Kills bacteria, controls algae, and won't stain
• Reduce chlorine use by up to 50%
• Optimizes your system and reduces the effects of harsh chemicals
• Family and environmentally friendly
• Create a safer pool experience - Residual sanitizing effects continue working long after chlorine is depleted
• Designed for pools up to 25,000 gallons