E-cowlboy Replacement Mineral Cartridge for Nature2/Duoclear 25/35 — W28000 Fit, 35,000 gal, Reinforced Housing

An E-cowlboy replacement mineral cartridge designed to drop into Nature2/Duoclear systems and help keep pool water clearer and softer for up to 35,000 gallons.

This replacement cartridge is made to match the fit and function of OEM W28000/W28001 (also compatible with W26000/W26001) for Zodiac Duoclear 25 and 35 systems and Nature2 Fusion, Fusion Soft, and Vision Pro setups. Built with reinforced thermoplastic housing and proven mineral and ceramic media, it aims to provide a low-maintenance way to support clearer-looking pool water while working with standard filtration systems for both aboveground and inground pools.

How does this cartridge work with my Zodiac or Nature2 system?

The cartridge installs directly into Duoclear and Nature2 Fusion-type housings as a one-to-one replacement for the original cartridges. It releases mineral particles and ceramic media in a controlled manner to interact with your pool circulation, helping reduce common issues that make water look dull or murky.

• Direct-fit design for Duoclear 25/35 and Nature2 Fusion housings
• Controlled-release mineral and ceramic media integrated into the core
• Durable thermoplastic housing resists impact and corrosion
• Recommended swap every six months for best performance

Will this cartridge reduce my need for heavy chemicals?

This cartridge is intended to complement your existing sanitizer routine, not replace sanitizers. By assisting with water clarity and reducing some causes of cloudiness, it can lower the frequency of shock treatments or heavy chemical dosing in many routine pool maintenance programs.

• Supports clearer water so sanitizers can work more effectively
• Helps minimize unpleasant odors and irritation associated with imbalanced water
• Reduces the burden of frequent large chemical additions in normal conditions
• Designed to be stable under heavy bather loads and temperature changes

What are the build quality and durability features?

The cartridge uses premium ceramic particles and mineral media inside a CNC-molded reinforced PVC housing that resists cracking, deformation, and UV exposure. Those choices in materials aim to give consistent performance across seasons and maintain a tight seal with standard system fittings.

• Reinforced thermoplastic housing for strength and longevity
• Anti-corrosion, high/low temperature resistant construction
• Media engineered for steady, controlled release over service life
• Manufactured and tested to meet or exceed OEM specifications

How do I install and maintain the cartridge?

Installation is quick and straightforward: shut off the pump, open the housing, remove the old cartridge, and insert the E-cowlboy unit following the same orientation as the original. Routine maintenance is minimal—returning the cartridge every six months keeps performance reliable; always follow your system manual for safe servicing.

• Turn off system pump before opening cartridge housing
• Replace with identical orientation to the OEM cartridge
• Inspect O-rings and housing seals on each service
• Replace cartridge approximately every six months for optimal results

Who is this for: Pool owners who use Zodiac Duoclear or Nature2 Fusion-style mineral systems and want a dependable, drop-in replacement cartridge that aims to preserve water clarity and reduce heavy chemical use. It’s suitable for both aboveground and inground pools up to 35,000 gallons, and for anyone seeking an OEM-compatible, durable cartridge with a straightforward installation and manufacturer-backed warranty.