---
product_id: 161446195
title: "4.5\" x 20\" Refillable Well Water Filter - for Iron, Sulfur and Chlorine Reduction | KDF 85 + KDF 55 + Activated Carbon - Compatible with 20\" Big Blue Housing by Oceanic Water Systems"
brand: "oceanic water systems"
price: "£124.12"
currency: GBP
in_stock: true
reviews_count: 8
category: "Oceanic Water Systems"
url: https://www.desertcart.co.uk/products/161446195-4-5-x-20-refillable-well-water-filter-for-iron
store_origin: GB
region: United Kingdom
---

# Coconut shell carbon 4.5" x 20" size KDF 85 & 55 tech 4.5" x 20" Refillable Well Water Filter - for Iron, Sulfur and Chlorine Reduction | KDF 85 + KDF 55 + Activated Carbon - Compatible with 20" Big Blue Housing by Oceanic Water Systems

**Brand:** oceanic water systems
**Price:** £124.12
**Availability:** ✅ In Stock

## Summary

> 💦 Refresh Your Water, Refresh Your Life!

## Quick Answers

- **What is this?** 4.5" x 20" Refillable Well Water Filter - for Iron, Sulfur and Chlorine Reduction | KDF 85 + KDF 55 + Activated Carbon - Compatible with 20" Big Blue Housing by Oceanic Water Systems by oceanic water systems
- **How much does it cost?** £124.12 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/161446195-4-5-x-20-refillable-well-water-filter-for-iron)

## Best For

- oceanic water systems enthusiasts

## Why This Product

- Trusted oceanic water systems brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Certified Quality:** ANSI and NSF certified for your peace of mind.
- • **Eco-Friendly Choice:** Made with sustainable coconut shell carbon for a greener planet.
- • **Iron & Sulfur Slayer:** Say goodbye to unpleasant odors and tastes in your water.
- • **Transform Your Water:** Experience the purest taste with advanced filtration technology.
- • **Universal Compatibility:** Fits perfectly in standard 20" Big Blue housing.

## Overview

The Oceanic Water Systems 4.5" x 20" Refillable Well Water Filter is engineered to effectively reduce iron, sulfur, and chlorine in your water. Featuring a powerful combination of KDF 85 and KDF 55, along with activated coconut shell carbon, this filter ensures superior taste and odor removal. Compatible with standard 20" Big Blue housing, it is ANSI and NSF certified, making it a reliable choice for clean, refreshing water.

## Description

WORKS WITH BIG BLUE HOUSING - 4.5" x 20" KDF85/KDF55/GAC WATER FILTER CARTRIDGE 2 LBS KDF55 2 LBS KDF85 BALANCE IS GAC CARBON COCONUT SHELL. KDF55: KDF 55 Designed specifically for removing or reducing chlorine and water-soluble heavy metals. The process medium recently received NSF International Certification and is certified by NSF to NSF/ANSI Standard 42. This medium is also in compliance with California Health and Safety Code Section 166875 (or commonly know as AB1953) and Vermont Act 193 KDF 85 Medium Removes or reduces iron and hydrogen sulfide from municipal or other water supplies. iron / hydrogen sulfide reduction filter contains a combination of KDF85 media and coconut shell activated carbon. The KDF85 effectively reduces dissolved iron and hydrogen sulfide odor over a wider pH range than possible with standard oxidation filters such as manganese greensand, thereby protecting your plumbing system including toilets, bath tubs and showers, and appliances such as clothes washers and dishwashers, from unsightly staining and odor. The activated carbon removes organic contaminants to substantially improving water clarity, taste, and odor. It does NOT add any harmful chemicals to the water, making it completely safe for drinking water applications.

Review: I have the worst well water around. - My water is bad. It smells. It turns everything bright orange. I bought this filter hoping it would work. To my surprise it worked great. I can tell the difference in one day. No more smell. The water doesn't come out orange. Most of all it got my wife off my back because of the water. That alone makes it well worth it. First filter that worked in 4 years.
Review: Clog in 6 time use. - I ordered for my well to my sprinkler system, work 6 times and clog completely. Expensive and low quality. The refund me only 9 dollars for my return.

## Features

- Water Filter Standard Size 4.5" x 20". Each filter is filled with Granular Activated Coconut Shell Carbon and 2 lbs of both KDF 85 and 55. Works with 20" Big Blue Housing
- Perfect and Effective at Iron, Hydrogen sulfide, Sulfur, Rotten Egg Smell Reduction in water. *Depending on Local water quality, chemistry, and conditions which vary dramatically from location to location
- KDF 55: Reduces chlorine taste and odor, water-soluble heavy metals, and scale in drinking water
- Filter can be used in Standard 4.5" x 20" big Housing Canisters.
- Superior taste and odor removal capabilities. Effective at removing H2S smell from Well Water (**Depending on Local water quality, chemistry, and conditions which vary dramatically from location to location**)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07SGJQVC3 |
| Best Sellers Rank | #575,291 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #915 in Under-Sink & Countertop Filtration |
| Brand | Oceanic Water Systems |
| Brand Name | Oceanic Water Systems |
| Customer Reviews | 3.9 out of 5 stars 40 Reviews |
| External Testing Certification | ANSI, NSF |
| Included Components | water filter |
| Item Dimensions D x W x H | 4.5"D x 4.5"W x 20"H |
| Item Type Name | 4.5" x 20" Refillable Well Water Filter - for Iron, Sulfur and Chlorine Reduction | KDF 85 + KDF 55 + Activated Carbon - Compatible with 20" Big Blue Housing |
| Item Weight | 8 Pounds |
| Manufacturer | Oceanic Water Systems |
| Manufacturer Part Number | KDF85 |
| Material | Carbon,Coconut Shell,Activated Carbon,Iron,Activated |
| Material Type | Carbon,Coconut Shell,Activated Carbon,Iron,Activated |
| Model Number | KDF85 |
| Number of Items | 1 |
| Product Benefits | Removes Iron |
| Product Dimensions | 4.5"D x 4.5"W x 20"H |
| Set Name | Big Blue |
| UPC | 818368012647 |
| Unit Count | 1.0 Count |

## Images

![4.5" x 20" Refillable Well Water Filter - for Iron, Sulfur and Chlorine Reduction | KDF 85 + KDF 55 + Activated Carbon - Compatible with 20" Big Blue Housing by Oceanic Water Systems - Image 1](https://m.media-amazon.com/images/I/51h4TGqs7ML.jpg)
![4.5" x 20" Refillable Well Water Filter - for Iron, Sulfur and Chlorine Reduction | KDF 85 + KDF 55 + Activated Carbon - Compatible with 20" Big Blue Housing by Oceanic Water Systems - Image 2](https://m.media-amazon.com/images/I/51f6sV0KtCL.jpg)
![4.5" x 20" Refillable Well Water Filter - for Iron, Sulfur and Chlorine Reduction | KDF 85 + KDF 55 + Activated Carbon - Compatible with 20" Big Blue Housing by Oceanic Water Systems - Image 3](https://m.media-amazon.com/images/I/51vfTRjxpoL.jpg)
![4.5" x 20" Refillable Well Water Filter - for Iron, Sulfur and Chlorine Reduction | KDF 85 + KDF 55 + Activated Carbon - Compatible with 20" Big Blue Housing by Oceanic Water Systems - Image 4](https://m.media-amazon.com/images/I/51Z7WzWKjPL.jpg)
![4.5" x 20" Refillable Well Water Filter - for Iron, Sulfur and Chlorine Reduction | KDF 85 + KDF 55 + Activated Carbon - Compatible with 20" Big Blue Housing by Oceanic Water Systems - Image 5](https://m.media-amazon.com/images/I/41IHzi0CnDL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ I have the worst well water around.
*by A***R on February 12, 2022*

My water is bad. It smells. It turns everything bright orange. I bought this filter hoping it would work. To my surprise it worked great. I can tell the difference in one day. No more smell. The water doesn't come out orange. Most of all it got my wife off my back because of the water. That alone makes it well worth it. First filter that worked in 4 years.

### ⭐ Clog in 6 time use.
*by J***R on August 10, 2024*

I ordered for my well to my sprinkler system, work 6 times and clog completely. Expensive and low quality. The refund me only 9 dollars for my return.

### ⭐⭐⭐⭐ Does remove the rotten egg smell
*by J***R on May 5, 2022*

I have a small wellhouse and have been fighting the rotten egg smell for about a year now. Bleaching/chlorinating helps temporarily, but it always comes back. I plan on adding an Aeration system eventually but figured this was worth a shot for the price. The good news is it did remove most of the rotten egg smell. If a faucet sits unused for a while, the smell will return temporarily which is understandable. But as water runs through the filter, the smell does go away. So maybe 15 seconds max of rotten egg smell the next morning. I'd call this a huge improvement. I also noticed my shower water had less of a "Metallic-Earthy" smell to it. I'll be purchasing the media to refill this unit when the time comes.

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-06-19*