Nelsen Katalox + Ozone Air-Injection (AIO) Iron & Sulfur Filter

NWS Control-Flow AIO with ozone and Katalox Light — maximum oxidation

For challenging wells with heavy iron, manganese, and stubborn sulfur odor, ordinary air injection can be pushed to its limit. This NWS Control-Flow system adds ozone injection on top of air oxidation and Katalox Light media, delivering a stronger oxidizing punch for water that lighter systems struggle with — still without ongoing chemicals to store or dose.

When ordinary air injection is not enough

Some wells simply carry more iron, manganese, and sulfide than a standard air-injection filter can fully convert at the home's flow rate. The tell-tale signs are staining or odor that a basic system only partly clears. Adding ozone raises the oxidation ceiling so even heavy loads are handled reliably.

Why add ozone

Ozone is a powerful oxidizer. Introduced along with the air pocket, it accelerates the conversion of dissolved iron, manganese, and hydrogen sulfide into filterable solids, which the Katalox Light bed then captures. The Control-Flow valve backwashes the media and renews the system automatically. The result is high-capacity, chemical-free treatment aimed at the toughest nuisance-contaminant wells.

What sets it apart

• Ozone-boosted oxidation for heavy or hard-to-treat loads.
• Katalox Light media for strong catalytic filtration.
• Programmable Control-Flow valve with automatic backwash.
• No salt and no chemical feed to maintain.

Because this is a higher-capacity solution, matching it correctly to your water chemistry and flow is essential — oversizing wastes money and undersizing leaves contaminants behind. Send us your well test and we will confirm whether the ozone configuration is right for you and size it accordingly. Ships free in the US with manuals and expert guidance.

Matched to demanding water

Ozone-assisted systems earn their keep on the toughest wells, but only when sized to the real contaminant load and flow. Send us your water test and we will verify the ozone configuration is warranted, specify the correct capacity, and provide the guidance and manuals to install and operate it safely and effectively.

Backed by free US shipping, full manuals, and expert guidance on ozone setup and safety, this system gives homes with the most demanding well water a chemical-free path to consistently clean, clear results.