Aries (AF-20-2214-BB) 20" x 4.5" (4 lb) KDF-85-GAC Filter
Aries AF-20-2214-BB 20" x 4.5" KDF-85/GAC Filter
Industrial-grade filtration for iron, hydrogen sulfide, and bacterial control in whole-house and commercial well water applications
Redox chemistry meets activated carbon for complete well water treatment
KDF-85 Redox Process
Four pounds of KDF-85 media removes hydrogen sulfide and reduces iron through oxidation-reduction chemistry and mechanical filtration, handling the heavy lifting before carbon gets involved
ResinTech Coconut GAC
Granular activated carbon from coconut shells provides exceptional adsorption of organic contaminants, taste, and odor compounds after KDF pre-treatment extends its service life
Bacteriostatic Protection
KDF media naturally inhibits bacterial growth inside the filter cartridge, preventing biofilm formation and maintaining system hygiene between changeouts
Big Blue Capacity
The 20" x 4.5" format delivers commercial-grade flow rates and extended service intervals for whole-house and light commercial installations
Standard 20-inch Big Blue housings
The Aries AF-20-2214-BB fits all standard 20" x 4.5" Big Blue filter housings with 1" or 1.5" NPT ports. Designed for well water applications, whole-house systems, and commercial installations where iron and hydrogen sulfide are present. Works downstream of sediment pre-filtration for best results.
Replacement schedule
Typical Replacement
Replace when iron breakthrough or hydrogen sulfide odor returns, typically between 6 and 12 months depending on water chemistry and daily usage volume
High Iron/H₂S Levels
For well water with elevated iron or hydrogen sulfide concentrations, monitor performance monthly and replace when reduction efficiency drops
Pressure Monitoring
Track pressure drop across the filter housing. A 10+ PSI increase signals media exhaustion or fouling and indicates replacement is due
Drop-In Replacement
No modifications required for standard 20" Big Blue housings
Cost-Effective Treatment
Redox chemistry eliminates the need for chemical oxidizers or backwashing systems
Whole-House Protection
Removes iron staining and sulfur odors at the point of entry
Well Water Specialist
Purpose-built for the challenges of private well and rural water supplies
Aries AF-20-2214-BB 20" x 4.5" KDF-85/GAC Filter
Industrial-grade filtration for iron, hydrogen sulfide, and bacterial control in whole-house and commercial well water applications
Redox chemistry meets activated carbon for complete well water treatment
KDF-85 Redox Process
Four pounds of KDF-85 media removes hydrogen sulfide and reduces iron through oxidation-reduction chemistry and mechanical filtration, handling the heavy lifting before carbon gets involved
ResinTech Coconut GAC
Granular activated carbon from coconut shells provides exceptional adsorption of organic contaminants, taste, and odor compounds after KDF pre-treatment extends its service life
Bacteriostatic Protection
KDF media naturally inhibits bacterial growth inside the filter cartridge, preventing biofilm formation and maintaining system hygiene between changeouts
Big Blue Capacity
The 20" x 4.5" format delivers commercial-grade flow rates and extended service intervals for whole-house and light commercial installations
Standard 20-inch Big Blue housings
The Aries AF-20-2214-BB fits all standard 20" x 4.5" Big Blue filter housings with 1" or 1.5" NPT ports. Designed for well water applications, whole-house systems, and commercial installations where iron and hydrogen sulfide are present. Works downstream of sediment pre-filtration for best results.
Replacement schedule
Typical Replacement
Replace when iron breakthrough or hydrogen sulfide odor returns, typically between 6 and 12 months depending on water chemistry and daily usage volume
High Iron/H₂S Levels
For well water with elevated iron or hydrogen sulfide concentrations, monitor performance monthly and replace when reduction efficiency drops
Pressure Monitoring
Track pressure drop across the filter housing. A 10+ PSI increase signals media exhaustion or fouling and indicates replacement is due
Drop-In Replacement
No modifications required for standard 20" Big Blue housings
Cost-Effective Treatment
Redox chemistry eliminates the need for chemical oxidizers or backwashing systems
Whole-House Protection
Removes iron staining and sulfur odors at the point of entry
Well Water Specialist
Purpose-built for the challenges of private well and rural water supplies
Description
Aries AF-20-2214-BB 20" x 4.5" KDF-85/GAC Filter
Industrial-grade filtration for iron, hydrogen sulfide, and bacterial control in whole-house and commercial well water applications
Redox chemistry meets activated carbon for complete well water treatment
KDF-85 Redox Process
Four pounds of KDF-85 media removes hydrogen sulfide and reduces iron through oxidation-reduction chemistry and mechanical filtration, handling the heavy lifting before carbon gets involved
ResinTech Coconut GAC
Granular activated carbon from coconut shells provides exceptional adsorption of organic contaminants, taste, and odor compounds after KDF pre-treatment extends its service life
Bacteriostatic Protection
KDF media naturally inhibits bacterial growth inside the filter cartridge, preventing biofilm formation and maintaining system hygiene between changeouts
Big Blue Capacity
The 20" x 4.5" format delivers commercial-grade flow rates and extended service intervals for whole-house and light commercial installations
Standard 20-inch Big Blue housings
The Aries AF-20-2214-BB fits all standard 20" x 4.5" Big Blue filter housings with 1" or 1.5" NPT ports. Designed for well water applications, whole-house systems, and commercial installations where iron and hydrogen sulfide are present. Works downstream of sediment pre-filtration for best results.
Replacement schedule
Typical Replacement
Replace when iron breakthrough or hydrogen sulfide odor returns, typically between 6 and 12 months depending on water chemistry and daily usage volume
High Iron/H₂S Levels
For well water with elevated iron or hydrogen sulfide concentrations, monitor performance monthly and replace when reduction efficiency drops
Pressure Monitoring
Track pressure drop across the filter housing. A 10+ PSI increase signals media exhaustion or fouling and indicates replacement is due
Drop-In Replacement
No modifications required for standard 20" Big Blue housings
Cost-Effective Treatment
Redox chemistry eliminates the need for chemical oxidizers or backwashing systems
Whole-House Protection
Removes iron staining and sulfur odors at the point of entry
Well Water Specialist
Purpose-built for the challenges of private well and rural water supplies
