Fleck 5800 SXT Katalox Light Iron Filtration System
The Fleck 5800 SXT with Katalox Light media delivers chemical-free iron, manganese, arsenic, and hydrogen sulfide removal for well water applications. This whole-house system combines a programmable digital control valve with double backwash cycles and catalytic media that lasts 5–10 years with 30x the capacity of traditional greensand or Birm.
Four-Stage Chemical-Free Filtration
Katalox Light Chemisorption
Raw well water enters the pressure vessel and contacts Katalox Light media, a manganese dioxide-coated zeolite that catalyzes oxidation of dissolved iron, manganese, and hydrogen sulfide into filterable solids without chemicals or potassium permanganate.
Multi-Contaminant Capture
Oxidized iron, manganese, and particulates are trapped within the high-surface-area Katalox Light bed. The media also adsorbs hydrogen sulfide, eliminating rotten egg odor while filtering sediment down to 3 microns.
Clean Water Distribution
Filtered water exits the tank and flows to your entire home at rates up to 21 GPM. The Fleck 5800 SXT digital valve monitors flow and time to ensure optimal contact with media for consistent iron and sulfide removal throughout the day.
Automatic Backwash Cleaning
The Fleck 5800 SXT automatically initiates double backwash cycles based on programmable time or meter settings. High-velocity upflow lifts and cleans the media bed, flushing captured contaminants to drain and restoring full filtration capacity without operator intervention.
Media life 5–10 yearsContaminant Removal Capacity
| Iron (Fe) | Up to 7 ppm dissolved and precipitated |
| Hydrogen Sulfide (H₂S) | Up to 2 ppm |
| Manganese (Mn) | Up to 1 ppm or higher |
| Particulate Filtration | Down to 3 microns |
| Service Flow Rate | Up to 21 GPM (varies by tank size — see size guide) |
| Optimal pH Range | 6.5–9.0 |
Choose the Right Tank Size
| Tank | Backwash Rating | Ideal For |
|---|---|---|
| 8" × 44" | Up to 4 GPM | 1–2 people, light iron/well demand |
| 9" × 48" | Up to 5 GPM | 2–3 people, moderate demand |
| 10" × 54" | Up to 6 GPM | 3–4 people — most popular size |
| 12" × 52" | Up to 8 GPM | 4–5 people, higher-flow homes |
| 13" × 54" | Up to 10 GPM | 5–6 people, larger households |
| 14" × 65" | Up to 12 GPM | Large households or light commercial |
Sizing note: These ratings reflect the Fleck 5800 SXT's backwash capability with Katalox Light media — every size listed here stays well within the valve's 17 GPM backwash ceiling (rated for tanks up to 16" diameter), so you're choosing based on your home's flow demand, not a system limitation.
Fleck 5800 SXT Digital Features
The Fleck 5800 SXT valve offers programmable time-clock or metered regeneration with dual backwash cycles for thorough media cleaning. Digital controls include non-volatile memory that retains programming during power outages, adjustable cycle times, and immediate or delayed regeneration options. The valve supports standard 1-inch or 1.25-inch plumbing connections and operates on standard 110V power with low water consumption during backwash.
Installation Requirements
This system is designed for standard well water applications with iron up to 7 ppm, hydrogen sulfide up to 2 ppm, and pH between 6.5 and 9.0. A professional water test is recommended before installation to confirm contaminant levels and adjust system sizing if needed. Requires adequate water pressure (25–80 psi), 110V electrical outlet, and drain access for backwash discharge.
Assembled vs. Unassembled — What's the Difference?
Unassembled
The mineral tank, control valve, and fittings ship as separate components, with your Katalox Light media included but not loaded. You'll pour the media into the tank, mount the valve, and hook up your bypass — a straightforward job for anyone comfortable with basic plumbing, typically 1–2 hours.
Assembled
We pour the Katalox Light media into the tank, mount the valve, and pressure-test the complete unit in our shop before it ships. It arrives ready to set in place and connect to your home's water line — no media pouring or valve-to-tank assembly required on your end.
Why the price difference? The assembled option reflects the labor to load the media, mount the valve, and pressure-test the unit here before it ships, plus the extra care in packaging a fully built system for freight — iron systems run a slightly higher assembly premium than softeners and carbon filters due to the heavier media. Either option is the same filtration system underneath — assembled just saves you the media pour and the bench work.
