🌊 Product Overview
The LiquaGen 4.5” x 20” GAC + KDF-55 + KDF-85 + Cation Resin Filter Cartridge (Chlorine & Iron Reduction) is our largest Big Blue multi-stage cartridge, engineered for maximum contaminant reduction and extended capacity.
This cartridge combines Granular Activated Carbon (GAC) for chlorine and chemical removal, KDF 55 & KDF 85 for iron, hydrogen sulfide, and heavy metal reduction, and Cation Resin for scale control—delivering a comprehensive filtration solution that outperforms standard carbon-only filters.
With its Big Blue 4.5" x 20” design, it provides greater media volume, higher flow rates, and longer filter life, making it the ideal choice for whole-house and light commercial applications.
✨ Key Benefits & Features
-
💧 Chlorine & Odor Reduction – Coconut shell GAC removes chlorine, VOCs, pesticides, herbicides, and organic chemicals.
-
🛡️ Dual KDF Media – KDF 55 and KDF 85 reduce dissolved iron, hydrogen sulfide (rotten egg odor), and heavy metals such as lead, mercury, nickel, cadmium, and aluminum.
-
🚫 Scale Prevention – Cation resin reduces calcium and magnesium, preventing scale buildup in plumbing and appliances.
-
🌱 Bacteria Inhibition – KDF media naturally resists bacterial growth inside the cartridge.
-
🔧 Big Blue Fit – Compatible with all standard 4.5” x 20” Big Blue housings.
-
⏱️ Extended Lifespan – Large media capacity supports longer intervals between filter replacements.
📋 Technical Specifications
| Parameter | Details |
|---|---|
| Model | LiquaGen 4.5” x 20” GAC + KDF-55 + KDF-85 + Cation Resin Cartridge |
| Size | 4.5” x 20” (Big Blue Cartridge) |
| Media Types | Coconut Shell GAC + KDF 55 + KDF 85 + Cation Resin |
| Primary Functions | Reduces chlorine, iron, hydrogen sulfide, heavy metals, hardness, taste, and odor |
| Micron Rating | 5 nominal |
| Capacity | ~7,500–10,000 gallons (varies by water quality) |
| Recommended Lifespan | 6–12 months |
| Max Pressure | 90 PSI (6.2 bar) |
| Operating Temp. | 40–100°F (4.4–37°C) |
| Housing Compatibility | Fits all standard 4.5” x 20” Big Blue housings |
🏠 Applications
-
🚰 Whole-House Filtration – Provides chlorine- and iron-free water to every tap in your home.
-
🚿 Bathrooms & Laundry – Prevents rust stains, odors, and scaling on sinks, tubs, showers, and clothes.
-
🧊 Kitchen & Cooking – Delivers cleaner, better-tasting water for food prep, beverages, and ice.
-
🏠 Appliance Protection – Extends the life of dishwashers, washing machines, and water heaters.
-
🏢 Light Commercial Use – Ideal for cafés, restaurants, and small businesses requiring high-capacity filtration.
💙 Why Choose LiquaGen?
The LiquaGen 4.5” x 20” GAC + KDF-55 + KDF-85 + Cation Resin Cartridge is the highest-capacity option in this filter family, delivering multi-stage chlorine and iron reduction with whole-house flow rates. By combining four advanced filtration medias, it ensures long-lasting, comprehensive contaminant control for cleaner, safer, and fresher water.