Hobby Filter Sponge, coarse black 50 x 50 x 5 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 five-centimetre thickness creates a deep filtration layer with high dirt-holding capacity, good shape retention and extensive biological surface area. The discreet black material is particularly suitable for visible filter compartments, pump prefilters and custom mat-filter installations.

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 × 5 cm
• Thickness: 5 cm
• Suitable for freshwater aquariums
• Suitable for marine and reef aquariums
• Suitable for internal and external filters
• Suitable for sumps and filter chambers
• Suitable for mat filters
• Suitable as a pump prefilter
• Can be cut to size
• Good water permeability
• High dirt-holding capacity
• Washable and reusable
• Discreet black material
• Suitable for custom filtration systems
• Product number: 20481
• EAN: 4011444204813

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 × 50 mm
• Water types: freshwater and marine
• Cut-to-size: yes
• Washable: yes
• Reusable: yes
• Manufacturer: Hobby Aquaristik
• Product number: 20481
• EAN: 4011444204813

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.
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.