EHEIM Substrat 180g - 250ml Biological Filter Media

Premium Bio-Filter Media for Healthy Aquariums

The EHEIM Substrat 180g (250L) is a high-performance biological filter medium designed to support crystal-clear, stable, and healthy aquarium water. Made from highly porous sintered glass, this media provides an enormous surface area of 450 m² per litre for beneficial bacteria to colonise. These bacteria play a crucial role in breaking down harmful substances and ensuring long-term water quality.

Ideal for both freshwater aquariums, EHEIM Substrat is a trusted choice among aquarists worldwide. When used after mechanical pre-filtration (e.g. with EHEIM MECH or MECHpro), it ensures optimal biological filtration and a balanced aquarium ecosystem.

Key Features & Benefits

• Efficient biological filtration – creates a thriving bacteria colony for natural breakdown of waste

• Large surface area (450 m²/L) – maximises colonisation space for purification bacteria

• Made from sintered glass – durable, highly porous structure for superior performance

• Reusable – simply rinse gently in aquarium water for long-lasting use

• Promotes stable water values – supports clear and healthy aquarium conditions

• Trusted EHEIM quality – German engineering for reliable aquarium filtration

Technical Specifications

• Product: EHEIM Substrat

• Weight: 180g

• Volume: 250ml

• Material: Highly porous sintered glass

• Colonisation area: 450 m² per litre

• Filtration type: Biological

• Suitable for: Freshwater aquariums

• Reusable: Yes (rinse carefully, do not use tap water)

Usage Tips

• Use in one or more layers in your filter baskets or modules

• Do not replace or clean all filter media at once – preserve beneficial bacteria

• Rinse gently in aquarium water (not tap water) to maintain biological function