The Aries FilterWorks AF-20-3231 is a 20"x2.5" calcite filter designed to neutralize acidic water and restore balanced pH levels up to 7.0. Built with FDA-compliant materials and manufactured in the USA, this specialty cartridge offers reliable acid correction for well water and whole-house applications.
SPECIFICATIONS
Aries AF-20-3231 Technical Details
| Model Number | AF-20-3231 |
| Dimensions | 20" x 2.5" |
| Media Type | 100% Calcite |
| Application | pH Neutralization / Acid Correction |
| Housing Compatibility | Standard 20" Big Blue housings |
| Temperature Range | 40°F to 100°F (4.4°C to 37.8°C) |
| Materials | FDA-compliant |
| Manufacturer | Aries FilterWorks (ResinTech Division) |
INSTALLATION & USE
Setup Instructions
- Install the AF-20-3231 cartridge into a standard 20" Big Blue filter housing suitable for whole-house or well water applications.
- Flush the cartridge with no less than 10 bed volumes of water before placing the system into service to remove fines and activate the media.
- Monitor pH levels periodically to ensure balanced water quality between 7.0 and 7.5.
- Replace the cartridge when pH correction becomes inadequate or flow rate decreases significantly, typically every 6-12 months depending on water acidity and usage.
COMPATIBILITY
System Requirements
The Aries AF-20-3231 fits all standard 20-inch Big Blue filter housings with 2.5-inch inner diameter cartridge wells. This specialty filter is ideal for whole-house water treatment systems and well water applications where acidic conditions (pH below 7.0) cause corrosion, staining, or metallic taste. Works effectively as a standalone pH neutralizer or as part of a multi-stage filtration system addressing sediment, iron, and other contaminants common in private well supplies.
🔧 Pro Tip: Calcite media dissolves slowly as it neutralizes acid, so expect some harmless white sediment during initial flushing. Install a 5-micron sediment filter downstream to catch any calcite fines and protect fixtures and appliances.
