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Nelsen Corporation

AIO 12"x52" Sulfur Filter System

AIO 12"x52" Sulfur Filter System

Regular price $2,709.99
Regular price Sale price $2,709.99
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Taxes included. Free shipping to the lower 48 — nothing added at checkout.
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  • 90-day returns
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A complete whole-house air-injection filter. One price includes everything listed below.

What's in the box

Size Mineral tank Media Control valve
12" x 52" 12" x 52" sulfur-removal filter media (catalytic carbon blend) Fleck 2510SXT air-injection valve
  • Control valve: Fleck 2510SXT air-injection valve with built-in air injection.
  • Bypass: 3/4" bypass valve (included).
  • Mineral tank: black fiberglass-wrapped mineral tank with support bed and distributor.
  • Media: sulfur-removal filter media (catalytic carbon blend), sized to the tank.
  • Also included: 1" plumbing adapters, install and service manuals.
  • Ships pre-built, ready to install, free in the US.

How it works

The valve draws a pocket of air into the top of the tank. Water passes through the air, which oxidizes iron, manganese and hydrogen sulfide into particles, and the media bed filters them out. Every day the valve backwashes the bed, sends the trapped particles to drain and refreshes the air pocket.

Media benefits

  • Removes hydrogen sulfide: no rotten-egg smell
  • Stops black staining on fixtures and silverware
  • Daily automatic backwash keeps the bed clean
  • Air injection oxidizes iron, manganese and sulfur with plain air, so no chemicals or chlorine are added

Why this system costs what it does

This system Typical lower-priced kits
Iron and sulfur treatment Air injection: oxidizes with plain air, no chemicals Often chlorine or permanganate feed, or no oxidation step
Filter design Automatic daily backwash keeps the media bed clean Often a non-backwashing upflow head or a cartridge housing
Bypass valve 3/4" bypass included Often not included or an extra option
Media Named media, sized to the tank Media type or amount often not stated
Delivery Ships pre-built, ready to install Often ships in pieces for you to assemble and load
Shipping Free in the US Free only above a minimum, or extra

Not sure which size? Send a water test or tell us your symptoms and we will size it free.


The AIO 12" x 52" Sulfur Filter System parcel-delivery edition combines high treatment capacity with the convenience of carrier shipping. This single-tank air injection oxidizing filter removes hydrogen sulfide from well water chemical-free, banishing rotten-egg odor from every tap in larger homes that need the extra capacity a 12-inch tank provides for their water demand.

Oxidation-Based Sulfur Removal

During service, the system holds an air pocket at the top of its 12" x 52" mineral tank. Water passing through this oxygen-rich zone gives up its hydrogen sulfide to oxidation, and the filter media bed then captures the resulting particles. The Fleck 2510SXT control valve runs an automatic daily backwash, sending trapped sulfur to the drain and refreshing the air pocket so treatment continues seamlessly without chemicals or salt to monitor.

  • 12" x 52" black Structural mineral tank
  • Fleck 2510SXT air injection control valve
  • 3/4" bypass valve for convenient service
  • Packaged for convenient parcel delivery
  • Salt-free, chemical-free sulfur and odor removal
  • All media and support bed included, approximately 129.67 lbs

With its larger 12" tank, this system suits bigger households or homes where strong sulfur odor demands additional capacity. It installs at the point of entry on the main water line, treating the entire home at once for whole-house odor control. The parcel-ready packaging eases delivery and handling for many installation scenarios. Automatic daily regeneration and chemical-free operation keep maintenance light, making this AIO a dependable, low-effort solution for homeowners determined to rid their water of sulfur odor permanently.

For larger homes that can't easily receive freight, the parcel-delivery packaging lets a standard carrier handle delivery of this higher-capacity sulfur filter. Once installed, the 12-inch tank supplies the service flow and media capacity that bigger households need, with the trusted Fleck 2510SXT valve automating the daily backwash. Verify your water's sulfur concentration to confirm the sizing, and you'll have a convenient, chemical-free, low-maintenance system that keeps rotten-egg odor out of your home's water at every tap. Over time, this hands-off approach saves both effort and the recurring cost of chemical treatment. Sized correctly for a larger household, it keeps every faucet free of rotten-egg odor while asking almost nothing of you in return, making it a genuine set-and-forget upgrade for well-water homes.

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