E-cowlboy A30 Mineral Cartridge Replacement for Zodiac Nature2 A/Pro A Plus — Fits Two-Post Vessels, Up to 30,000 gal, Low-Mainten

E-cowlboy W28165 is a direct-fit replacement A30 mineral cartridge designed to restore Zodiac Nature2 A and Pro A Plus aboveground filter vessels and help maintain clearer, softer pool water for pools up to 30,000 gallons.

If your Zodiac Nature2 A or Pro A Plus vessel needs a fresh mineral cartridge, this E-cowlboy replacement matches OEM dimensions and performance. It’s engineered to work in standard two-post Nature2 vessels (W20040 style) and offers a low-maintenance mineral alternative that reduces reliance on heavy chemical dosing. The cartridge installs quickly and is recommended for replacement about every six months for best results.

Will this cartridge fit my Zodiac Nature2 vessel?

Yes, this replacement is built to match the standard A30 two-post configuration used in Zodiac Nature2 "A" and Pro A Plus aboveground vessels. It will not fit limited three-post vessels, so verify the post pattern on your current cartridge before ordering.

• Compatible with Zodiac part numbers: A30, W28165, W26765, 2704-010, 300379.
• Fits standard two-post Nature2 or Pro A Plus vessels (W20040 style).
• Not compatible with three-post limited vessels—check vessel top for posts.

How does the cartridge affect pool water care?

This cartridge uses controlled-release mineral media and ceramic particles to support clearer, softer-feeling water while reducing the frequency and amount of supplemental chemicals needed. It helps manage common nuisance issues like cloudy water and minor organic buildup without replacing your sanitizer routine entirely.

• Controlled-release minerals gradually disperse into the circulation for steady performance.
• Reduces dependency on heavy shock doses and frequent chemical adjustments.
• Designed to work with existing filtration and sanitizer systems—does not replace chlorine or salt systems.

What are the build quality and durability features?

The E-cowlboy cartridge uses reinforced thermoplastic PVC housing and compacted mineral/ceramic media for long service life and weather resistance. The casing resists impact, UV, and temperature extremes so it stays leak-free and dimensionally stable across seasons.

• Premium CNC-machined reinforced thermoplastic PVC housing for strength and corrosion resistance.
• Mineral and ceramic particles engineered for consistent release and longevity.
• Rated for aboveground pool conditions and robust against environmental stressors.

How do I install and maintain the replacement cartridge?

Installation takes only a few minutes: remove the old A30 cartridge, seat the new E-cowlboy cartridge into the standard two-post vessel, and restart circulation. Routine maintenance is minimal—replace about every six months or sooner if you notice performance decline.

• Turn off pump, release pressure, open Nature2 vessel, swap cartridges, and close securely.
• Recommended replacement interval: ~6 months for optimal performance.
• Compatible with normal pool chemistry checks; continue regular sanitizer testing.

Who is this for: Pool owners using Zodiac Nature2 "A" or Pro A Plus aboveground filter systems who want a cost-effective, OEM-compatible mineral cartridge replacement. It’s ideal for people seeking easier water upkeep with fewer heavy chemical top-ups, owners of pools up to 30,000 gallons, and anyone needing a robust, weather-resistant cartridge built to OEM fit and function. If you have a limited three-post vessel or a different Nature2 model, confirm compatibility before purchase.