Activated Carbon for Ponds and Aquariums

activated carbon for ponds and aquarium

If you are interested in fishkeeping or planning to start a fish tank, knowing about the relevant products and their requirements is crucial.

A crucial component of any aquarium is the aquarium filter, which helps maintain healthy and clean water for fish, providing them with a suitable living environment. Many aquarium filters come equipped with activated carbon filter cartridges, but do you know their functions and benefits for your aquarium?

Although filters come with different types of filter media, activated carbon is the most popular and efficient.

In this article, we will discuss the application of activated carbon in aquariums and ponds.

What is Activated Carbon?

Activated carbon is a porous adsorbent with excellent adsorption properties, efficiently removing pollutants from fish tanks and ponds, ensuring a clean and healthy water environment for the fish. Activated carbon adsorbs various dissolved pollutants, such as chlorine, chloramines, tannins (which cause water discoloration), and phenols (causing odors).

Over time, it contributes to preventing the yellowing of the aquarium water. Different methods of manufacturing activated carbon produce materials suitable for various purposes. In aquariums, the most commonly used form is coal-based granular carbon.

Benefits of Activated Carbon in Aquariums and Ponds

activated carbon in ponds

Activated carbon finds wide applications in aquariums or ponds, addressing various water-related issues.

Eliminating Odors

Activated carbon can remove unpleasant odors or fishy smells from water. Its porous surface captures liquids and gases, incorporating them into the carbon structure.

Purifying Water Quality

Activated carbon can absorb tannic acids and adsorb color in water, such as turbidity, and brown, and yellow discoloration.

Removing Toxins

When coral reefs and fish coexist, there is a higher likelihood of increased toxins in the water. While some toxins pose a low risk to aquatic life, others (such as red tides and algae) release potentially deadly algal toxins.

Activated carbon effectively eliminates toxins. Moreover, if impurities like smoke, aerosols, or any other pollutants enter the tank, activated carbon can eliminate them.

Clearing Medications

In aquariums and ponds, certain medications are sometimes added to treat sick fish. These medications can persist in the water and impact the health of the fish. Activated carbon can adsorb these medications.

Suppressing Algae Growth

Activated carbon can absorb excess nutrients in the water, minimizing the growth of algae and reducing the occurrence of protozoa.

Removing Organic Pollutants

Activated carbon is also commonly used in aquarium and pond filters to reduce the organic content in the water. The range of organic compounds it can remove varies from weakly adsorbed (e.g., acetone, dichloromethane) to strongly adsorbed (trichloroethylene, tetrachloroethylene, toluene, xylene, naphthalene, phenol, etc.).

Do you plan to purchase activated carbon?

Our Solutions

For pond and aquarium use, we primarily offer columnar carbon and granular carbon, made from high-quality smokeless coal or coconut shell. After activation and advanced processing, the activated carbon exhibits excellent adsorption performance, high strength, ease of regeneration, developed porosity, and a large surface area.

Here are some product specifications. If you have specific needs, we can customize them based on iodine value and specifications.

Activated Carbon ZLEPAC Series

Pellet activated carbon
  • Particle Size: 0.9mm, 2mm, 3mm, 4mm, 6mm, 8mm
  • CTC: 20-110 %
  • Hardness: ≥93 %
  • Moisture: ≤3 %
  • Ash Content: ≤12.5 %

Activated Carbon GAC Series

granular activated carbon 4
  • Iodine Value: 600-1100mg
  • Apparent Density: 450-550g/L
  • Moisture: ≤ 5 %
  • Hardness: ≥95 %

Do you plan to purchase activated carbon?


After reading the above content, you should have a deeper understanding of the application of activated carbon in aquariums and ponds. Now, all you need to do is find a reliable supplier to provide your fish with a healthy and clean water environment. With over 20 years in the activated carbon industry, we can offer you the highest quality activated carbon.

If you have any questions about using activated carbon for ponds and aquariums, feel free to contact us.

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