Seachem
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Purigen, 20 L / 5.3 gal.
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Purigen, 20 L / 5.3 gal.
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.
Purigen, 20 L / 5.3 gal.
Item #: 9981770

Purigen, 20 L / 5.3 gal.

Item #: 9981770

BHD 431

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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.
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What Stands Out

High Capacity
With a 20L capacity, Purigen efficiently filters large volumes of water, making it ideal for both home aquariums and commercial setups, ensuring clean and crystal-clear water at all times.
Ultra-Fine Filtration
Utilizing advanced polymer technology, Purigen removes organic wastes and impurities far more effectively than traditional filters, promoting a healthier aquatic environment and reducing algae growth.
Reusable Product
Purigen is easily regenerated with simple household chemicals, allowing for multiple uses. This not only saves money over time but also contributes to sustainable aquarium maintenance practices.

Product Details

Shop Purigen, 20 L / 5.3 gal. online at a best price in Bahrain. B005XOYG94
  • Organic filtration resin that removes nitrogenous compounds and fish waste
  • Spherical and macroreticular with microscopic pores for increased surface area
  • Can be regenerated with a bleach and water solution once exhausted
  • Some slime coat products may foul Purigen and make regeneration difficult
  • Manufactured in the United States
  • Designed for pets' use
Brand NameSeachem
Unit Count1 Count
ManufacturerSeachem Laboratories, Inc.
UPC000116016100
Number of Items1
Global Trade Identification Number00000116016100
Included Componentsall
Item Type NameAquarium Filtration Media
Model Number161
Manufacturer Part Number161
Liquid Volume20 liters
Item Weight28.1 pounds (12.75 kg)
Item FormGranules
Target SpeciesFish
Allergen InformationYam Free
Product Dimensions 12.5 x 12.5 x 19.75 inches (31.8 x 31.8 x 50.2 cm); 28.11 pounds (12.75 kg)
BrandSeachem

Who Should Buy?

Suitable For
  • Aquarium Enthusiasts

    Ideal for fishkeepers wanting enhanced water clarity and quality in their freshwater or saltwater aquariums.

  • Sensitive Species

    Beneficial for keeping delicate species thriving with optimal water conditions and reduced harmful chemicals.

  • Frequent Water Changes

    Great for users performing regular maintenance to keep water cleaner with less frequent changes.

Not Suitable For
  • Low-Tech Tanks

    Users with simple setups may not utilize the advanced filtration features Purigen offers effectively.

Product Description

Purigen, 20 L / 5.3 gal.

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is Purigen and how does it work?

    Answer: Purigen is a synthetic organic filtration media designed for aquariums, effectively removing organic compounds that cause water discoloration and contribute to harmful toxins. It works by using a unique polymeric structure that adsorbs impurities from water, providing crystal-clear results. This filtration media can be used in both freshwater and saltwater setups, enhancing water quality and promoting a healthy aquatic environment.
  • Question: How often should Purigen be replaced?

    Answer: The frequency of replacing Purigen largely depends on your aquarium's bio-load and water quality. Typically, it can be rejuvenated by soaking in bleach, dried, and reused, making it cost-effective. Regular water testing will help you determine when it’s time to refresh. Ideally, Purigen should be replaced when its effectiveness diminishes, which is often after several months of use, ensuring optimal water clarity and quality for your aquatic life.
  • Question: Can Purigen be used in freshwater and saltwater aquariums?

    Answer: Absolutely, Purigen is versatile and can be utilized in both freshwater and saltwater aquariums. Its ability to remove organic waste helps improve clarity and maintain a balanced environment in any aquatic setup. Whether you’re keeping tropical fish or delicate reef systems, Purigen’s performance ensures water remains pristine, enhancing the overall health of your aquatic ecosystem.
  • Question: How does Purigen compare to traditional carbon filters?

    Answer: Purigen outperforms traditional carbon filters by removing a broader range of organic waste and impurities, leading to clearer water. While carbon can become saturated quickly, Purigen can be regenerated, allowing for longer use. In scenarios where water quality is critical, such as displaying vibrant fish or sensitive coral, Purigen provides superior filtration, making it a preferred choice among advanced aquarists.
  • Question: How do you regenerate Purigen?

    Answer: To regenerate Purigen, soak it in a bleach solution, usually at a ratio of one part bleach to three parts water, for a few hours. Rinse thoroughly to remove all bleach residues before reusing. This process restores its adsorption capacity, making it an eco-friendly option. Regeneration can save you money while continuing to provide superior filtration in your aquarium, ensuring that you maintain optimal water quality over time.
  • Question: Is Purigen safe for all aquatic life?

    Answer: Yes, Purigen is safe for all types of aquatic life, including fish, invertebrates, and plants. Its chemical-free filtration means it doesn’t leach harmful substances back into the water. By eliminating impurities, Purigen promotes a healthier environment, making it excellent for breeding tanks or sensitive species. Many aquarists trust Purigen to maintain pristine conditions, ensuring the well-being of their aquatic inhabitants.
  • Question: What size aquarium can benefit from using Purigen?

    Answer: Purigen is beneficial for aquariums of all sizes, from small nano tanks to large reef setups. The recommended dosage varies, but typically, 100 mL is suitable for 100 liters (approximately 26 gallons) of water. It ensures that water clarity and quality are maintained regardless of aquarium size, making Purigen a versatile choice for both beginners and seasoned aquarists aiming for the best aquatic environment.
  • Question: How do you use Purigen in a filter system?

    Answer: To use Purigen in your filter system, simply place it in a mesh bag and put it in your filter's media compartment. It's important to position it where water flows freely over it for maximum effectiveness. This setup allows Purigen to actively remove organic waste, keeping your aquarium’s water crystal clear. Using Purigen alongside other filtration media can enhance your overall water quality, making it an ideal choice for diverse aquatic environments.
  • Question: Can Purigen remove ammonia and nitrites from water?

    Answer: While Purigen primarily targets dissolved organic compounds, it can assist in maintaining overall water quality, indirectly helping with ammonia and nitrite control by improving the effectiveness of biological filtration. For aquariums experiencing high levels of ammonia or nitrites, using Purigen in conjunction with appropriate cycling and filtration methods will help ensure a healthier environment for your aquatic inhabitants.
  • Question: Where can I buy Purigen, 20 L 5.3 gal?

    Answer: You can buy Purigen, 20 L 5.3 gal, from Ubuy, which offers a convenient online shopping experience. Ubuy provides a wide selection of aquarium products and ensures reliable access to Purigen, allowing you to maintain a healthy aquatic environment efficiently. Whether you're an experienced aquarist or just starting out, Ubuy has you covered with quality filtration solutions like Purigen.

Seachem Filter Accessories 161 Editorial Review

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Pros

  • Highly effective at removing impurities
  • Enhances water clarity significantly
  • Long-lasting; reusable multiple times
  • Easy to use and regenerate
  • Reduces ammonia and nitrate levels

Cons

  • Occasional discoloration after use

Platform Trust & Buyer Confidence

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4.6/5 148 reviews
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trusttaker
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“I loved it. That was my second order, and I am already thinking of placing a third order.”

16-Jul-26 · via Trustpilot
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Haitham
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“Trusted merchant”

11 July 2026 · via Trustpilot
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Maryam
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“The order arrived fast and in perfect condition”

2 June 2026 · via Trustpilot
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Mohammad
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“Excellent quality and very fast delivery, I really appreciate your service, when you work good I will appreciate that, I am very satisfied , thank you”

13 June 2026 · via Trustpilot
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Lulwa
Verified buyer

“I like the package arrived safely”

17 June 2026 · via Trustpilot
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BHD 431

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Features & Benefits

  • Easy to use
  • Adds great value
  • Manufactured in United States
  • Designed for pets and their use
  • Removes nitrogenous compounds and waste from water
  • Increases usable surface area
  • Can be regenerated with bleach and water

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