Overview

Achieve superior biological filtration with Eheim SUBSTRAT Pro 250 mL, an optimized bio-filter medium designed for maximum performance and efficiency. Made from pearl-shaped sintered glass, SUBSTRATpro ensures optimal use of filter volume and supports exceptionally dense bacterial colonization—keeping your aquarium water clean, clear, and healthy for longer periods between maintenance.

Key Features

• Optimized Bio-Filter Medium: Made from sintered glass for high biological filtration performance.

• High Bulk Density: Spherical shape maximizes usable volume in filter baskets or modules.

• Superior Bacterial Growth: Provides 450 m² of surface area per liter of media for intensive colonization.

• Enhanced Water Quality: Effectively reduces nitrite peaks for a stable, healthy aquarium.

• Long Maintenance Intervals: Retains efficiency longer before cleaning is needed.

• Reusable & Washable: Rinse gently to extend life—safe for both freshwater and marine setups.

• Reliable Eheim Quality: Engineered for long-term stability and consistent results.

Usage Tip

Never clean or replace all filter media at once, as beneficial bacteria colonies are vital for effective biological filtration. Clean only part of your filter media at a time to maintain stable water conditions.

Product Information

• SKU: 25076

• UPC: 720686250765

• Description: Eheim SUBSTRAT Pro 250 mL Optimized Bio-Filter Medium for Fresh & Marine Water