The Aries AF-20-2085 is a 20-inch by 2.5-inch specialty cartridge that combines coconut shell granular activated carbon with KDF-85 media to tackle hydrogen sulfide and iron in well water and whole-house applications. This dual-media design uses redox filtration to remove contaminants while inhibiting bacterial growth inside the filter housing.
SPECIFICATIONS
Aries AF-20-2085 Filter Details
| Manufacturer | Aries Filter Works |
| Model Number | AF-20-2085 |
| Dimensions | 20 inches x 2.5 inches |
| Media Type | Coconut shell GAC + KDF-85 |
| Primary Applications | Hydrogen sulfide removal, iron reduction |
| Filter Category | Specialty redox filter |
| Recommended Use | Well water, whole-house systems |
| Bacteriostatic | Yes, KDF-85 inhibits microbial growth |
INSTALLATION & USE
How to Install the AF-20-2085
- Shut off water supply and relieve pressure from your filter housing before opening
- Remove old cartridge and clean the housing sump with a mild bleach solution, then rinse thoroughly
- Insert the Aries AF-20-2085 cartridge into a standard 20-inch by 2.5-inch housing, ensuring proper seating
- Reinstall the housing, turn water supply back on, and flush the cartridge for 5 minutes to remove carbon fines
- Check for leaks at housing o-ring and monitor water quality after installation
COMPATIBILITY
Housing Requirements
The AF-20-2085 fits any standard 20-inch filter housing with a 2.5-inch inner diameter. This cartridge is designed for well water and whole-house systems where hydrogen sulfide odor or iron staining is a concern. KDF-85 media works best in applications with pH levels between 6.5 and 8.5, and performs optimally when water temperature is above 60°F. Not recommended for chlorinated municipal water as primary filtration; use KDF-55 media cartridges for chlorine removal instead.
🔧 Pro tip: If you're dealing with high iron levels (above 3 ppm), consider installing a sediment pre-filter upstream of the AF-20-2085 to capture oxidized iron particles and extend the life of the KDF media. Replace the cartridge every 6 to 12 months depending on water quality and usage.
