Nature2 Cartridge N2CG25 - W28125

The Nature2 W28125 G25 replacement mineral cartridge is designed for compatible Nature2 Professional G and Pro G Plus systems serving in-ground pools from 10,000 to 25,000 gallons.

Mineral technology works as part of a low-chlorine pool-care program. Replace the cartridge after six months or one season, whichever is shorter, and follow the cartridge owner’s manual for activation, water balance, and ongoing care.

This is a replacement cartridge, not a complete vessel. The Professional G vessel uses an internal bypass with a cartridge flow rate of 10–18 GPM; plumbing connections belong to the vessel, not the cartridge. Match the cartridge model to the label on your existing vessel before ordering.

GTIN: 706175281250
SKU: W28125
Brand: Zodiac
Sale price $229.00
Regular price $299.00
Shipping and tax are calculated at checkout.
In stock

Est. 4-6 business days for delivery.

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  • 30-Day Returns Easy return policy
  • Manufacturer Warranty Manufacturer warranty included

Nature2® W28125 G25 Style Single Cartridge for Pro Series Professional G, Pro Series G Plus, 25K gals replacement cartridge for the Nature 2 Standard Professional G Mineral Sanitizing System. It is an eco-friendly solution for in-ground swimming pools between 10,000 and 25,000 gallons, and drastically reduces chemical use. The G25 cartridge lasts up to six months, providing sanitization for an entire swim season. It uses 3" ports and requires a flow rate of 10 to 18 GPM.

Key Features

  • For Professional G, Pro G Plus
  • G25 Cartridge for pools up to 25,000 gallons (single unit)
  • Previous Part No. W26725 (4-pack)