Black Filter Sponge Rectangular (11 cm x 5.5 cm x 5.5 cm) - Internal Filter Media

Ensure optimal water clarity and biological health in your aquatic setup with the Black Filter Sponge Rectangular 11 cm x 5.5 cm x 5.5 cm, available now at www.onyxaqua.com. This high-density, porous foam block is an essential mechanical and biological filtration component designed to trap debris while supporting beneficial bacteria colonies.

Key Features & Benefits

• High-Density Porous Foam: Crafted from a durable, coarse black foam material that allows for excellent water flow while effectively trapping free-floating physical debris and fish waste.

• Biological Filtration Support: The highly porous structure of the Black Filter Sponge Rectangular 11 cm x 5.5 cm x 5.5 cm provides a massive surface area, creating the perfect breeding ground for beneficial nitrifying bacteria to thrive.

• Customizable Media: Easily cut and trim the sponge to fit precisely into any hang-on-back filter, canister filter, internal pump, or custom sump compartment.

• Reusable & Long-Lasting: Designed for durability, this black filter sponge can be repeatedly rinsed in tank water and reused over many months, making it a highly cost-effective filtration solution.

Technical Specifications

To maximize the biological efficiency of your filter sponge, never rinse it under untreated tap water, as the chlorine will kill the beneficial bacteria. Instead, gently squeeze it out in a bucket of drained aquarium water during your routine water changes.