
Aries (AF-20-2085-BB) 20"x4.5" Big Blue KDF-85 Filter
Aries AF-20-2085-BB 20"x4.5" Big Blue KDF-85 Filter
High-capacity redox media filter for hydrogen sulfide and iron removal in whole-house applications
The AF-20-2085-BB combines KDF 85 redox media with ResinTech coconut shell granular activated carbon (GAC) to address common well water issues including hydrogen sulfide (rotten egg odor), iron staining, and heavy metals. The 20" x 4.5" Big Blue format delivers extended service life and high flow rates for whole-house systems.
Why KDF 85 with GAC Works
KDF 85 Redox Process
Removes hydrogen sulfide and reduces soluble iron through oxidation-reduction, converting contaminants into filterable particles without chemicals
Coconut Shell GAC
ResinTech activated carbon provides superior absorption of organic compounds, tastes, and odors while complementing the KDF media
Bacteriostatic Media
KDF 85 inhibits bacterial growth inside the filter, preventing biofilm formation and maintaining filtration performance over time
Extended Service Life
The combination of KDF and GAC extends filter life compared to carbon-only cartridges, reducing replacement frequency and operating costs
Heavy Metal Reduction
Removes water-soluble cations including lead, mercury, and other heavy metals through the redox process
High Flow Capacity
20-inch length and 4.5-inch diameter provide ample media contact time without restricting flow in whole-house applications
System Fitment
The Aries AF-20-2085-BB fits all standard 20" x 4.5" Big Blue filter housings with 1" or 1.5" ports. Ideal for whole-house well water treatment where hydrogen sulfide odor and iron staining are present. Compatible with Pentek, Culligan, and other brands using the 20BB housing format. Commonly used as a specialty pre-filter stage ahead of sediment and carbon filtration in multi-stage systems.
Aries Filter Works manufactures specialty filtration media in the USA using premium ResinTech carbon and certified KDF redox media for reliable water treatment performance.
Aries AF-20-2085-BB 20"x4.5" Big Blue KDF-85 Filter
High-capacity redox media filter for hydrogen sulfide and iron removal in whole-house applications
The AF-20-2085-BB combines KDF 85 redox media with ResinTech coconut shell granular activated carbon (GAC) to address common well water issues including hydrogen sulfide (rotten egg odor), iron staining, and heavy metals. The 20" x 4.5" Big Blue format delivers extended service life and high flow rates for whole-house systems.
Why KDF 85 with GAC Works
KDF 85 Redox Process
Removes hydrogen sulfide and reduces soluble iron through oxidation-reduction, converting contaminants into filterable particles without chemicals
Coconut Shell GAC
ResinTech activated carbon provides superior absorption of organic compounds, tastes, and odors while complementing the KDF media
Bacteriostatic Media
KDF 85 inhibits bacterial growth inside the filter, preventing biofilm formation and maintaining filtration performance over time
Extended Service Life
The combination of KDF and GAC extends filter life compared to carbon-only cartridges, reducing replacement frequency and operating costs
Heavy Metal Reduction
Removes water-soluble cations including lead, mercury, and other heavy metals through the redox process
High Flow Capacity
20-inch length and 4.5-inch diameter provide ample media contact time without restricting flow in whole-house applications
System Fitment
The Aries AF-20-2085-BB fits all standard 20" x 4.5" Big Blue filter housings with 1" or 1.5" ports. Ideal for whole-house well water treatment where hydrogen sulfide odor and iron staining are present. Compatible with Pentek, Culligan, and other brands using the 20BB housing format. Commonly used as a specialty pre-filter stage ahead of sediment and carbon filtration in multi-stage systems.
Aries Filter Works manufactures specialty filtration media in the USA using premium ResinTech carbon and certified KDF redox media for reliable water treatment performance.
Description
Aries AF-20-2085-BB 20"x4.5" Big Blue KDF-85 Filter
High-capacity redox media filter for hydrogen sulfide and iron removal in whole-house applications
The AF-20-2085-BB combines KDF 85 redox media with ResinTech coconut shell granular activated carbon (GAC) to address common well water issues including hydrogen sulfide (rotten egg odor), iron staining, and heavy metals. The 20" x 4.5" Big Blue format delivers extended service life and high flow rates for whole-house systems.
Why KDF 85 with GAC Works
KDF 85 Redox Process
Removes hydrogen sulfide and reduces soluble iron through oxidation-reduction, converting contaminants into filterable particles without chemicals
Coconut Shell GAC
ResinTech activated carbon provides superior absorption of organic compounds, tastes, and odors while complementing the KDF media
Bacteriostatic Media
KDF 85 inhibits bacterial growth inside the filter, preventing biofilm formation and maintaining filtration performance over time
Extended Service Life
The combination of KDF and GAC extends filter life compared to carbon-only cartridges, reducing replacement frequency and operating costs
Heavy Metal Reduction
Removes water-soluble cations including lead, mercury, and other heavy metals through the redox process
High Flow Capacity
20-inch length and 4.5-inch diameter provide ample media contact time without restricting flow in whole-house applications
System Fitment
The Aries AF-20-2085-BB fits all standard 20" x 4.5" Big Blue filter housings with 1" or 1.5" ports. Ideal for whole-house well water treatment where hydrogen sulfide odor and iron staining are present. Compatible with Pentek, Culligan, and other brands using the 20BB housing format. Commonly used as a specialty pre-filter stage ahead of sediment and carbon filtration in multi-stage systems.
Aries Filter Works manufactures specialty filtration media in the USA using premium ResinTech carbon and certified KDF redox media for reliable water treatment performance.











