Nelsen AIO Katalox Filter

Multi-contaminant well-water filtration with Katalox Light media

Some wells carry a combination of iron, manganese, and sulfur at once — and that is exactly what the Nelsen AIO Katalox Filter is built to handle. It pairs air-injection oxidation with Katalox Light, a high-performance catalytic filter media, to tackle several nuisance contaminants in a single tank without any chemicals.

The problems it targets

Iron leaves orange rust stains; manganese leaves darker brown-to-black staining and a bitter taste; hydrogen sulfide brings the rotten-egg odor. Many wells suffer from two or three of these together, which is where a single-purpose filter falls short. Katalox Light is chosen precisely because it addresses this cluster of contaminants at once.

Air injection plus a catalytic media

As water enters, it passes through a pocket of air held in the top of the vessel, where dissolved iron, manganese, and hydrogen sulfide are oxidized. The Katalox Light bed then does double duty: its catalytic surface helps drive that oxidation along while the bed physically filters the particles out. The result is clear, odor-free water and reliable removal of the metals that stain fixtures and darken laundry. A scheduled backwash flushes the captured contaminants and renews the air pocket automatically.

Why owners choose Katalox Light

• Handles more than one problem — iron, manganese, and sulfur — in one system.
• Robust catalytic media that supports strong oxidation and filtration performance.
• Chemical-free operation with automatic backwash renewal.
• Single-vessel design for a compact, easier install.

Because well chemistry varies, correct sizing and, where needed, staging with a neutralizer or softener make all the difference in long-term results. The system installs on the main line ahead of the water heater and needs a drain for backwash. Send us your water test and flow requirements and we will confirm the right build. Ships free in the US with manuals and expert setup help.

Confirm your configuration

Because this filter can address iron, manganese, and sulfur together, the ideal media depth and backwash schedule depend on how much of each your well carries. A current water analysis lets us verify Katalox Light is the right choice and tune the setup, and our team stays available afterward to help you keep it performing at its best.