Seachem

Purigen Matrix Bio Media 250ml

$15.79

474+ bought in the past month

About this item

  • FILTRATION: Purigen ranges in color from almost white (cream) to light yellow. Seachem Purigen is not a mixture of ion exchangers or adsorbents, but a unique macro-porous synthetic polymer that removes soluble and insoluble impurities from water.
  • SELECTIVITY: Seachem Purigen is an organic filtration resin that works hard to remove nitrogenous compounds and waste produced by fish, corals, and even plants, making your water crystal clear.
  • CAPACITY: Being both spherical and macroreticular, Seachem Purigen has microscopic pores that increase its usable surface area to many times that of a purely spherical resin.
  • REGENERATION: Once Seachem’s Purigen is exhausted, it can be regenerated with a solution of bleach and water. The bleach will literally “burn off” the organics that have been removed from the tank.
  • SAFETY: Some slime coat products may permanently foul Purigen and render regeneration difficult. Do not reuse if odor of bleach/chlorine is detectable. In case of doubt, soak beads in small quantity of water and test for residual chlorine with a chlorine test kit.
$15.79

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Product details
BrandSeachem
Liquid Volume250 Milliliters
Item Weight8 ounces
Item FormGranules
ManufacturerSeachem Laboratories, Inc.
Technical specifications
item_weight8 ounces
departmentUnisex-Adult
manufacturerSeachem Laboratories, Inc.
item_model_number166
date_first_availableJune 20, 2004
item_package_dimensions_l_x_w_x_h4.88 x 2.28 x 2.2 inches
item_dimensions_lxwxh4.9 x 2.4 x 2.3 inches
brand_nameSeachem
target_audience_keywordAQUATICS, fish
directions1. 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.
country_of_originUnited States
warranty_descriptionWarranty
model_namePurigen
colorNo Color
size250 MILLILITER
materialPlastic
age_range_descriptionall stages
number_of_items1
styleAquarium Pond Water Treatment
included_componentsPurigen
specific_uses_for_productAquarium Filtration
is_discontinued_by_manufacturerNo
product_dimensions4.9 x 2.4 x 2.3 inches; 8 ounces
best_sellers_rank#11,235 in Pet Supplies ( See Top 100 in Pet Supplies ) #93 in Aquarium Water Treatments

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Customer reviews

4.73,558 ratings
  1. 588%
  2. 413%
  3. 30%
  4. 20%
  5. 10%

Customers say

Customers find the water treatment effective at clearing tanks and making them crystal clear within 24 hours, with one customer noting it works wonders at removing tannins.

★★★★★

Powerful Combo for Crystal-Clear, Healthy Water

Dragan ManojlovicDecember 9, 2025✓ Verified purchase

The Purigen & Matrix Bio Media (250ml) combo is one of the most effective upgrades you can make to any aquarium filtration system. Purigen does an incredible job at removing discoloration, organics, and impurities — the water becomes noticeably clearer within a short time, often looking “polished.” It regenerates easily, too, which makes it cost-effective in the long run. Matrix is equally impressive. Its highly porous structure provides excellent surface area for beneficial bacteria, helping stabilize ammonia, nitrite, and nitrate levels. It’s reliable, long-lasting, and works well in virtually any filter setup. Together, these two products create a powerful filtration solution that supports both water clarity and biological stability. If you want cleaner, healthier water and a more stable tank ecosystem, this pairing is a fantastic choice. Highly recommended for freshwater and marine hobbyists alike! Read more

★★★★★

Sparkling clear water with Purigen

LG TripletdadFebruary 2, 2025✓ Verified purchase

Seachem Purigen is an absolute game-changer for keeping aquarium water crystal clear! I simply place it in my filter, and it attracts and locks in tannins, preventing that unwanted yellow or brown tint in the water. This is especially useful for tanks with driftwood or other organic materials that release tannins over time. One of the best things about Purigen is how long-lasting and reusable it is. Unlike traditional chemical filtration media, it can be recharged with bleach and used multiple times, making it a cost-effective solution for maintaining pristine water clarity. Since using Purigen, I’ve noticed a dramatic improvement in water quality, and my fish seem happier and more vibrant. It doesn’t strip out beneficial minerals like carbon does, which is another big plus. If you're struggling with discolored or murky water, I highly recommend Seachem Purigen. It’s an easy, effective, and reliable way to keep your aquarium looking its best! Read more

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★★★★★

A Game-Changer for Clear Water!

Amy WMarch 2, 2025✓ Verified purchase

I can't say enough good things about Purigen. I bought some wood that was leaching a lot of tannins and turning my aquarium water yellow. I was dreading the long, tedious process of constantly washing the wood to get rid of it. But instead, I decided to give Purigen a try, and I'm SO glad I did! It worked wonders – my water is now crystal clear, and the yellow tint is completely gone. The best part? I've bleached and reused the Purigen multiple times with great success! It continues to perform just as well as it did when I first used it. This product is a total lifesaver, and I highly recommend it to anyone struggling with water discoloration. It's a must-have in my aquarium maintenance routine now. I love it! Read more

★★★★★

Best Produce for Crystal clean water.

rstampaJune 4, 2025✓ Verified purchase

Works great. Been using in for a few years now and my tank water is always crystal clean. Plus you can reuse it over and over again. Keeps phosphorous levels way down. Read more

★★★★★

Purigen works!

LaurieNovember 22, 2025✓ Verified purchase

Get yourself a 180 micron reusable filter bag and put this in your filter. It works very quickly to make cloudy water crystal clear. Highly recommended. Read more

★★★★☆

Purigen = Amazing!

RickApril 20, 2013✓ Verified purchase

This stuff is amazing. It polishes the water very well and makes it look crystal clear. I would have given 5 stars, but you are forced to buy "The Bag" which is a filter media bag from Seachem. The reason for this is, is that the Purigen is very very FINE (almost like sand) and will seep through most media storage devices. You might be able to try panty hose, but I wouldn't recommend it. It is also very easy to use. Just dump it into "The Bag" from Seachem, zip tie it up, rinse it with some filtered watered (can probably use tap water, but that makes me nervous. I might be weird on this one, but tap water makes me nervous in general so whenever I'm using tap water or even filtered water, I dump some prime in the tank, Once rinsed just put it in your filter. I currently have this in 2 HOB filters and it works amazing. I have a third that I am going to put in one of my canisters, but I have been too lazy to tear my canister apart. Also I have been using for a month now in a planted tank that I dose with Excel and the Purigen has had no ill effects on the plants Excellent Product that I would recommend!! They also say it is rechargeable!!! Wish I learned about this stuff sooner! Read more

★★★★★

Amazing Clear Water Can Be Yours!

MadmattDecember 16, 2025✓ Verified purchase

This stuff is amazing. Took my murky water to a mirror clear appearance in just a few days. It will be a must-have in my aquarium for now on! Read more

★★★★★

Top notch

mazzmanJanuary 20, 2026✓ Verified purchase

You want clear water? Esp in a fresh water or brackish tank.This is what you want.Youll need to purchase a filter bag for the media.Fill it flush it .Pop it in a HOB or cannister.Give it 24 hours.Consistently good stuff Read more

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