US Water Systems Flexx Oxi-Gen Aeration Iron and Sulfur Filter
Chemical-free aeration iron and sulfur filter rated to 8 ppm iron, 10 ppm with ozone.
$2,230
Usability
The Oxi-Gen is the entry point in US Water's iron and sulfur range and the one with no running chemical cost, which over a decade is a substantial argument. Air injection oxidises iron and sulfide well within its rating, and coconut shell catalytic carbon is a better filtration medium than the manganese dioxide beds many competitors use. The company itself positions this as the good option in a good-better-best ladder, and the ceiling is the reason: at 8 ppm iron, or 10 with ozone, water carrying more than that needs peroxide injection instead. Aeration also struggles more than peroxide with dissolved rather than particulate sulfide. The warranty terms here are specific and unusually clear, ten years on the tank and seven on the valve, which is better disclosure than the blanket lifetime language used elsewhere in the catalogue.
- No chemicals to buy, ever
- Coconut shell catalytic carbon media
- Specific published warranty: 10 years tank, 7 years valve
- Bluetooth programming
- Lowest running cost in the iron and sulfur range
- Ozone upgrade raises the iron ceiling to 10 ppm
- Iron ceiling of 8 ppm, or 10 ppm with ozone
- Less effective on dissolved sulfide than peroxide injection
- Requires a drain line and power for backwash
- A well water analysis is essential to know whether it is sufficient
- No system certification stated
An aeration iron and sulfur filter that draws air through a venturi to oxidise dissolved iron and hydrogen sulfide, then filters the precipitate through coconut shell catalytic carbon. No chemicals to buy. Rated to 8 ppm iron, or 10 ppm with the ozone option. Ten-year tank warranty, seven-year valve warranty, Bluetooth programming.
Additional information
Specification: US Water Systems Flexx Oxi-Gen Aeration Iron and Sulfur Filter
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