Hobby Filter Sponge, coarse black 50 x 50 x 3 cm, PPI 10

The coarse black filter foam removes larger suspended particles before the water reaches finer filtration media. Its open-cell structure also provides colonisation area for beneficial microorganisms and supports biological filtration after maturation.

The three-centimetre thickness provides a practical balance between dirt-holding capacity, water permeability and compact installation. Its black colour remains discreet in visible filter compartments and around pump intakes.

Key features

• Coarse black filter-foam sheet
• Mechanical and biological filtration
• Captures coarse debris
• Provides surface area for beneficial bacteria
• Pore density: 10 PPI
• Dimensions: 50 × 50 × 3 cm
• Thickness: 3 cm
• Suitable for freshwater aquariums
• Suitable for marine and reef aquariums
• Suitable for internal and external filters
• Suitable for sump chambers
• Suitable as a pump prefilter
• Can be cut to size
• Good water permeability
• Washable and reusable
• Discreet black material
• Suitable for custom filtration systems
• Product number: 20483

Technical information

• Product: Hobby Filter Sponge Coarse Black
• Type: coarse filter-foam sheet
• Filtration: mechanical and biological
• Colour: black
• Pore density: 10 PPI
• Dimensions: 500 × 500 × 30 mm
• Water types: freshwater and marine
• Cut-to-size: yes
• Washable: yes
• Reusable: yes
• Manufacturer: Hobby Aquaristik
• Product number: 20483

Directions

1. Measure the internal dimensions of the filter chamber.
2. Mark the required shape on the foam.
3. Cut the material with a long, sharp knife or scissors.
4. Make the piece slightly larger than the filter opening.
5. Rinse the new foam before use.
6. Install it without excessive compression.
7. Prevent water from bypassing the edges.
8. Position the coarse foam before finer filter media.
9. Check that water passes evenly through the material.
10. Clean the foam when water flow begins to decrease.
11. Rinse established biological foam in removed aquarium water.
12. Replace the material when it becomes brittle, damaged or permanently compressed.