Nelsen C-Series AIO Katalox Filter
The problem
Hard water combined with iron and sulfur contamination leads to stubborn stains, unpleasant odors, and premature damage to plumbing and appliances.
These issues cause frustration, increased maintenance, and costly replacements if untreated—impacting your daily life and home value.
How it works — the katalox-light media that fixes it
The system’s Katalox-Light® catalytic media harnesses air-injection oxidation to convert dissolved iron, manganese, and hydrogen sulfide into filterable particles without harsh chemicals like potassium permanganate or chlorine.
Daily air pockets introduced by the Connected Series valve oxidize contaminants, and programmable backwash cycles flush them away, ensuring efficient multi-contaminant removal in a single, streamlined system.
What it handles
Built for Hard water + iron
Well water with multiple contaminants demands a system that handles iron, manganese, and sulfur all at once. The Nelsen C-Series AIO Katalox Filter is tailor-made for homes facing hard water combined with these nuisance elements.
Its catalytic Katalox-Light® media paired with air-injection oxidation ensures thorough treatment without chemicals, making it ideal for maintaining clean water free of stains and odors. The smart control valve offers water-efficient regeneration and remote management, perfectly matching the needs of modern well-water households.
Built on a genuine Connected Series Air Draw Meter Control Valve valve — not a disposable clone
This system runs on a Connected Series Air Draw Meter Control Valve control valve — the industry-standard brain of the system. Its parts are stocked by water dealers nationwide and stay available for decades, so a worn seal or piston is a quick, low-cost rebuild — never a throwaway. For a Hard water + iron where downtime is expensive, that serviceability is the whole point. We never build on unbranded clone heads that strand you when they fail.
Genuine, serviceable, warrantied — a system you keep for 15 years instead of replacing in four.
Product features
What it saves you
By removing iron, manganese, and sulfur odors, you protect your plumbing and appliances from staining and corrosion, saving on frequent repairs and replacements.
The air-injection design minimizes water use during regeneration, conserving thousands of gallons annually compared to traditional systems—saving water and lowering utility bills.
What you’ll notice
Is this the right system for you?
- You have well water with iron and sulfur
- You experience staining on fixtures and laundry
- You notice rotten egg odors from water
- You want a single system for multiple contaminants
- You seek water treatment with smart monitoring
How we compare
| Water Softener Plus | Typical online seller | |
|---|---|---|
| Money-back guarantee | 90 days, honest | 'risk-free' but 25% restocking fee |
| Pricing | Published, factory-direct | Often gated / quote-only |
| Valve | Genuine Connected Series Air Draw Meter Control Valve, serviceable for decades | Unbranded clone head |
| Warranty | Lifetime on tanks & valves | Limited |
| Setup | Pre-assembled & programmed to your water | Box of parts, DIY |
Buy with confidence
Honest guarantee — no hidden restocking-fee traps.
On tanks & valves — built to last.
Split it with Shop Pay at checkout.
Ready for better water?
Experience spotless, odor-free water with smart, efficient multi-contaminant treatment designed for your well water’s toughest challenges.
Frequently asked questions
How does the air-injection system improve water treatment?
By introducing daily pockets of air, the system oxidizes dissolved iron, manganese, and sulfur compounds, converting them into particles that the media can filter out efficiently without using harsh chemicals.
Can I monitor and control the system remotely?
Yes. The Connected Series valve connects via Bluetooth to the free Legacy View app, allowing you to adjust settings and receive system status updates from your smartphone.
Does this system waste a lot of water during backwash?
No. The programmable air-draw allows air replenishment daily without an extra backwash cycle, saving thousands of gallons of water each year compared to traditional systems.
Is the system suitable for homes with high iron and sulfur levels?
Yes, the Katalox-Light® media is highly effective at treating combined iron, manganese, and hydrogen sulfide contamination commonly found in well water.
What maintenance is required for this system?
Periodic inspection of the system and occasional backwash cycles programmed automatically by the valve ensure continuous performance. The bypass valve allows easy servicing without water interruption.
Can I add a tank jacket for aesthetics?
Yes, an optional chrome tank jacket is available to enhance the appearance of the mineral tank in visible spaces.
Will this system remove hardness from my water?
While the system targets iron, manganese, and sulfur, it helps reduce hard water effects by oxidizing minerals, but it is not a dedicated water softener.