Improve aquarium water filtration and provide an ideal environment for beneficial bacteria with this high-density biochemical filter sponge. Designed with a multi-porous structure, the filter sponge offers excellent water flow while providing a large surface area for beneficial nitrifying bacteria to colonise.

Suitable for freshwater and marine aquariums, this versatile filter foam can be cut to the required size to fit different aquarium filtration systems, sumps, tanks and filtration units.

Key Features

• Multi-Porous Structure: Provides a large surface area for beneficial bacteria while helping maintain efficient water flow.
• Biological Filtration: Helps cultivate nitrifying bacteria for effective biological aquarium filtration.
• Excellent Water Permeability: Allows water to pass through efficiently while helping trap unwanted residue.
• Helps Reduce Waste Build-Up: Suitable for decomposing and processing organic waste and leftover food within the filtration system.
• Reusable Filter Media: Can be cleaned and reused, making it a practical choice for long-term aquarium maintenance.
• Customisable Size: Can be manually cut to fit different aquarium filters and filtration compartments.
• Durable & Flexible: Thick, lightweight and soft material makes installation and handling easy.
• Freshwater & Marine Use: Suitable for a wide range of aquarium filtration applications.
• Black Colour: Neutral black design blends easily into most aquarium filtration systems.
• Brand New & Unused: Supplied brand new and ready for use.

Suitable For

Ideal for use in:

• Freshwater aquariums
• Marine aquariums
• Fish tanks
• Aquarium sumps
• Biological filtration systems
• Aquarium filter boxes
• Canister filter systems
• DIY aquarium filtration setups

Product Specifications

Product Type: Biochemical Filter Sponge / Filter Foam
Material: Biochemical Filter Cotton
Colour: Black
Application: Biological Aquarium Filtration
Suitable For: Freshwater & Marine Water
Features: Multi-Porous, Reusable, Cuttable, Lightweight & Water Permeable

How It Works

The porous structure provides a large surface area where beneficial nitrifying bacteria can grow and establish. Water can flow through the filter material while the dense structure helps retain residue and organic particles, supporting an effective aquarium filtration process.

Easy to Customise

The biochemical filter cotton can be cut to your required size and shape, making it suitable for different aquarium filters and DIY filtration applications.

Cleaning & Maintenance

The filter sponge can be cleaned and reused. For optimum filtration performance and bacterial growth, it is recommended to replace the biochemical sponge approximately every 3 months, depending on aquarium conditions and usage.

Important Vacuum Packaging Note

The biochemical filter cotton is vacuum packed and compressed during packaging and shipping. When received, it may appear smaller, deformed or thinner than expected.

Simply remove it from the packaging and place it flat for approximately 1–2 days. It should gradually return towards its original shape and thickness. Vacuum compression does not affect the filtration performance of the material.

Measurement Notice

As the filter cotton may be manually cut, please allow a possible 0–2 cm size variation. Please consider this before purchasing.

Package Includes

1 × Biochemical Aquarium Filter Cotton Sponge

Please check the product size/variation information carefully before ordering.