---
product_id: 50284066
title: "Purigen Freshwater, 250 ml"
brand: "seachem"
price: "415 kr"
currency: DKK
in_stock: true
reviews_count: 8
category: "Seachem"
url: https://www.desertcart.dk/products/50284066-purigen-freshwater-250-ml
store_origin: DK
region: Denmark
---

# Lasts 4-6 weeks per use Highest organic removal capacity Reusable with easy regeneration Purigen Freshwater, 250 ml

**Brand:** seachem
**Price:** 415 kr
**Availability:** ✅ In Stock

## Summary

> ♻️ Purify, reuse, repeat — clarity that keeps up with your lifestyle!

## Quick Answers

- **What is this?** Purigen Freshwater, 250 ml by seachem
- **How much does it cost?** 415 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/50284066-purigen-freshwater-250-ml)

## Best For

- seachem enthusiasts

## Why This Product

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

## Key Features

- • **Eco-Smart Reusability:** Regenerate with bleach for multiple cycles, saving cost
- • **Effortless Maintenance:** Pre-packed beads eliminate measuring and mess
- • **Universal Compatibility:** Works seamlessly in canister, hang-on, and RTA filters without flow restriction
- • **Comprehensive Filtration:** Removes ammonia, nitrites, nitrates, tannins & dissolved organics
- • **Crystal-Clear Water, Fast:** Transforms tea-stained tanks to glass-clear in 48 hours

## Overview

Seachem Purigen Freshwater 250 ml is a high-capacity synthetic polymer resin designed to remove dissolved organics, ammonia, nitrites, nitrates, and tannins from freshwater aquariums. It delivers crystal-clear water within 24-48 hours, comes pre-packed for no-mess use, and can be regenerated multiple times using a bleach solution, making it a cost-effective and eco-friendly filtration solution trusted by thousands of aquarists worldwide.

## Description

Product Description Seachem Purigen 250Ml Directions 1. Rinse the Purigen media beads in water before use. 2. Place your filter. 3. For best results, place a filter bag to prevent it from clogging 4. Regenerate when turns dark brown or black using bleach solution. 5. Do not use with products containing slime coat as may become toxic. Box Contains water treatment

Review: Crystal-clear results—removes tannins, organics, and cloudiness with zero faff or chemical drama. - Dropped this into a 120L planted tank running a canister filter—water went from tea-stained to glass-clear in under 48 hours. It targets dissolved organics, not just visible muck, so it’s ideal for setups with driftwood, heavy feeding, or cloudy water issues. Comes pre-packed in a mesh pouch—no measuring, no mess. Just rinse, drop into your filter tray or media basket, and let it work. I’ve used it in both RTA-style filters and hang-ons—no flow restriction, no breakdown. 🔍 Specs & Features Size: 100ml pouch (treats up to ~400L depending on bioload) Type: Synthetic polymer resin Use: Freshwater only (this version) Function: Removes tannins, ammonia, nitrites, nitrates, and dissolved organics Regeneration: Can be cleaned and reused with bleach (instructions provided) 🧪 Performance Clarity: Noticeable improvement in 24–48 hours Smell: Reduces tank odour Colour: Clears brown tint from driftwood setups Longevity: Lasts 4–6 weeks depending on load Reusability: Can be regenerated multiple times—saves cost long-term 👍 Pros ✅ Clears water fast—removes organics and tannins ✅ Pre-packed—no mess, no measuring ✅ Reusable—regenerates with bleach ✅ No impact on pH or hardness ✅ Works in most filter types 👎 Cons ❌ Needs bleach for regeneration—follow safety steps ❌ Doesn’t remove heavy metals or meds ❌ Can clog if used in very dirty tanks—pre-filter recommended ❌ Not a substitute for water changes 🧭 Personal Verdict If you want crystal-clear water without chemical dosing or constant maintenance, Purigen earns its spot. I’ve used it in planted tanks, fry setups, and even shrimp tanks—no drama, just clean results. It’s proper gear for anyone who wants clarity without compromise.
Review: Crystal clear water - Unbelievable product I’ve put a 500ml tub in 3 180micron bags in my sump tank for 850 litres of water and my water is absoloutly crystal clear my fish look outstanding. Extreamly happy with this product.

## Features

- Highest organic removal capacity
- Helps control ammonia/nitrite/nitrate
- Colour changes as it exhausts; easily regenerated

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000255PJE |
| Allergen Information | Yam Free |
| Best Sellers Rank | 1,324 in Pet Supplies ( See Top 100 in Pet Supplies ) 9 in Aquarium Water Treatments |
| Brand | Seachem |
| Brand Name | Seachem |
| Country Of Origin | USA |
| Customer Reviews | 4.7 out of 5 stars 16,349 Reviews |
| Global Trade Identification Number | 00000116016605, 00015568976827 |
| Included Components | Filtration |
| Item Form | Beads |
| Item Type Name | Seachem Purigen Freshwater, 250 ml |
| Item Weight | 0.23 Kilograms |
| Item form | Beads |
| Item height | 2.3 inches |
| Item weight | 0.23 Kilograms |
| Liquid Volume | 250 Millilitres |
| Liquid volume | 250 Millilitres |
| Manufacturer | Seachem |
| Product Warranty | 3 years |
| Target Species | Fish |
| UPC | 015568976827 000116016605 |
| Unit Count | 250.0 millilitre |

## Product Details

- **Brand:** Seachem
- **Liquid volume:** 250 Millilitres
- **Item weight:** 0.23 Kilograms
- **Item form:** Beads
- **Manufacturer:** Seachem

## Images

![Purigen Freshwater, 250 ml - Image 1](https://m.media-amazon.com/images/I/61aCA7Ktx+L.jpg)

## Questions & Answers

**Q: is it meant to have a rotten fish smell?**
A: It does smell a bit when first opened, its fine to use.

**Q: Heard so many good reports about this product but can it be used in internal filter, i have Juwel Bioflow 3 in 125L tank.**
A: I was able to fit the sachet into one of the side housings inside a Fluval U2 pump (as supplied with my 90 litre tank). All I had to do was remove the sponge and carbon pad. It’s only been running 5 hours and I can see a difference already. I also dosed with Seachem Pristine.

**Q: any one know if this is ok for use with with a biorb .**
A: Yes

**Q: How many of this for a 510 liter tank grams ???**
A: Its treating up to 1000l so one should be enough you may need to recharged it quicker due your tank size

## Customer Reviews

### ⭐⭐⭐⭐⭐ Crystal-clear results—removes tannins, organics, and cloudiness with zero faff or chemical drama.
*by G***E on 21 September 2025*

Dropped this into a 120L planted tank running a canister filter—water went from tea-stained to glass-clear in under 48 hours. It targets dissolved organics, not just visible muck, so it’s ideal for setups with driftwood, heavy feeding, or cloudy water issues. Comes pre-packed in a mesh pouch—no measuring, no mess. Just rinse, drop into your filter tray or media basket, and let it work. I’ve used it in both RTA-style filters and hang-ons—no flow restriction, no breakdown. 🔍 Specs & Features Size: 100ml pouch (treats up to ~400L depending on bioload) Type: Synthetic polymer resin Use: Freshwater only (this version) Function: Removes tannins, ammonia, nitrites, nitrates, and dissolved organics Regeneration: Can be cleaned and reused with bleach (instructions provided) 🧪 Performance Clarity: Noticeable improvement in 24–48 hours Smell: Reduces tank odour Colour: Clears brown tint from driftwood setups Longevity: Lasts 4–6 weeks depending on load Reusability: Can be regenerated multiple times—saves cost long-term 👍 Pros ✅ Clears water fast—removes organics and tannins ✅ Pre-packed—no mess, no measuring ✅ Reusable—regenerates with bleach ✅ No impact on pH or hardness ✅ Works in most filter types 👎 Cons ❌ Needs bleach for regeneration—follow safety steps ❌ Doesn’t remove heavy metals or meds ❌ Can clog if used in very dirty tanks—pre-filter recommended ❌ Not a substitute for water changes 🧭 Personal Verdict If you want crystal-clear water without chemical dosing or constant maintenance, Purigen earns its spot. I’ve used it in planted tanks, fry setups, and even shrimp tanks—no drama, just clean results. It’s proper gear for anyone who wants clarity without compromise.

### ⭐⭐⭐⭐⭐ Crystal clear water
*by B***N on 1 January 2026*

Unbelievable product I’ve put a 500ml tub in 3 180micron bags in my sump tank for 850 litres of water and my water is absoloutly crystal clear my fish look outstanding. Extreamly happy with this product.

### ⭐⭐⭐⭐⭐ Excellent but also a warning!
*by R***S on 17 January 2016*

Ok so I recently had two problems one the filters that came with my rank were hopeless so I had to upgrade to a Fluval 406 which is great by the way. I tried to use as much of the older filter media as possible but fully expected a mini cycle and an ammonia spike due to the change. For the last week I had also been plagued by slightly cloudy water more noticeable when viewing the tank lengthways but still annoying ! So in went the Fluval about three days later in that went the Purigen. Readings taken before the Purigen showed a slight ammonia spike at .25 and nitrites also high and nitrates at about 40 so basically not good! 24 hours after the Purigen went in these were at 0! The other thing as you will see is it has visibly cleared the slight cloudiness after 48 hours this is almost completely crystal clear even when the tank is viewed length way so it works! Apart from this it has also done something which I don't really know how to describe but everything just looks more vibrant it's like I went from standard definition to HD. I think cost wise it's reasonable. Especially when compared to say Chemi Pure which to treat my tank would cost close to 40 pounds with one pouch if Purigen is actually more than enough for my 300 litre tank. I am still running normal carbon as this extends the life of the Purigen and also Purigen fits easily into my Fluval 406. Now for the caution bit. I was actually considering taking one star off for this because I don't think Seachem make this clear enough unless you do your own research which I did but many don't ! Once finding numerous threads on the internet about two serious issues I wrote to Seachem who have clarified and confirmed so this is straight from Seachem. Issue no 1 . Many water conditioners that are used today in water changes contain a slime coat element which contains amines. This could render the Purigen useless. To be on the safe side you need to use a water conditioner which does not have this ingredient like Seachem Prime, or remove the Purigen from the filter during water changes for about 24 to 48 hours. To be clear using a water conditioner that contains amines won't create any toxicity but will reduce the effectiveness of it and also saturate it so it is not capable of being recharged. Issue number 2. If you use a water conditioner containing amines which many do, then if you use this to regenerate your Purigen it will make it toxic and kill your fish. It is hard to know whether or not a water conditioner contains amines one that is safe is Seachem Prime. Amines are not necessarily listed on the ingredients as there are variations of this chemical. I know that the Fluval and Tetra water conditioners are both not safe to regenerate Purigen. What happens if you try to regenerate your Purigen with one of these water conditioners is a chemical reaction which will trigger highly toxic chloramine in your tank. As I do not intend to reuse or regenerate my Pugin this is not a problem for me but I have switched to using a different water conditioner just to be on the safe side. I really do think that Seachem should make this clear to people purchasing this product as the consequences could be catastrophic. I will continue to use this product as it seems to really help with water clarity and chemistry but I will be purchasing a new bag when this one runs out. I suggest if you do want to use this product switch to Seachems water conditions also either Prime or Safe to get the most out of it.

## Frequently Bought Together

- Purigen & Matrix Bio Media 250ml
- ALEGI Media Filter Bag Aquarium Extra Fine,Reusable 180 Micron Drawstring Mesh Filter Bags for Very Fine Resins Filter (7.5"*3.6" (3 Pack))
- Seachem Prime Fresh and Saltwater Conditioner - Chemical Remover and Detoxifier 500 ml

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-23*