Drinking & Specialty
The Crusader Multimedia Oxidizing (MM-OX) filter is a fully automatic, metered whole-home system that removes iron, manganese and hydrogen-sulfide (rotten-egg) odor from well water.

The Crusader Multimedia Oxidizing (MM-OX) filter is a simple, effective iron-removal system for whole-home well water. Soluble iron and manganese are oxidized and precipitated on a proprietary manganese-dioxide–coated media, and hydrogen sulfide is oxidized into a filterable sulfur precipitate — then flushed away by vigorous backwashing. The media regenerates by sparging with ambient air, which makes it environmentally friendly.
It’s fully automatic and metered: a programmable control runs upflow air injection, backwash, rinse and refill cycles based on your water use. The fiberglass media tank is NSF, UL and FDA approved and meets WQA Standard S-100, with a limited lifetime warranty.
Fully automatic; easy to use and maintain
Problem-water filtration for your entire home
Removes iron, manganese and hydrogen sulfide
Goodbye bad-tasting, rotten-egg odor
Soluble iron and manganese are oxidized and precipitated on contact with a proprietary manganese-dioxide–coated oxidation media, and hydrogen sulfide is oxidized into a filterable sulfur precipitate. The precipitates are trapped in the media bed and then flushed away by vigorous backwashing.
A programmable electronic control meters your water use and runs upflow ambient-air injection, backwash, rinse and refill cycles automatically — regenerating the media with air instead of harsh chemicals. The fiberglass media tank is NSF, UL and FDA approved and meets WQA Standard S-100.
Multimedia Oxidizing (MM-OX) Iron Filter Models
| Model | CS-MM-OX-1 | CS-MM-OX-2 | CS-MM-OX-3 |
|---|---|---|---|
| Max System Capacity (ppm) | 10,000 | 20,000 | 30,000 |
| Peak Flow Rate (gpm) | 10 | 15 | 20 |
| Service Flow Rate (gpm) | 8 | 12 | 16 |
| Max Influent Iron (ppm) | 10 | 10 | 10 |
| Max Influent Manganese (ppm) | 1 | 1 | 1 |
| Operating pH Range | 6.2–9.5 | 6.2–9.5 | 6.2–9.5 |
| Overall System Height | 61.25" | 61.25" | 72.25" |
| Tank Diameter | 10" | 13" | 14" |
| Shipping Weight (lbs) | 110 | 210 | 290 |
Specifications from the manufacturer (crusaderwater.com). Your installer will confirm the right model for your water and household.
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