2-Chamber Biological Filter 1.5 m³ for Aquaculture and Fish Farming

2-Chamber 1.5 m³ Biological Filter for Stable Water Quality

The CrawTec 1.5 m³ biological filter is designed for effective biofiltration in closed water supply systems, aquaculture farms, and ornamental ponds. It ensures stable water parameters by biologically converting ammonia and nitrites into less harmful nitrates, creating safe and healthy conditions for fish, shrimp, and crayfish.

The two-chamber configuration improves treatment efficiency by separating mechanical pre-filtration from biological processes. This design allows the biofilter to operate consistently even under high organic loads.

Key Technical Features

• Total biofilter volume: 1.5 m³
• Bio-media capacity: up to 1000 litres (floating and fixed media)
• Effective bio-surface area: up to 1000 m²/m³
• Housing material: food-grade polypropylene, 10 mm thick
• Overall dimensions: 2000 × 740 × 950 mm

• Inlet connections: 3 × Ø110 mm
• Outlet connections: 3 × Ø110 mm
• Aeration system: 3 disc diffusers Ø340 mm
• Compressor included for stable oxygen supply

Operating Principle and Applications

In the first chamber, water flow slows down and mechanical particles are retained, reducing turbidity and preparing the water for biological treatment. In the second chamber, beneficial bacteria colonise the bio-media and convert toxic ammonia and nitrites into nitrates through natural biological processes. Integrated aeration maintains high oxygen levels, accelerating bacterial activity and improving filtration efficiency.

This biofilter is suitable for closed water supply systems, fish farms, aquaculture facilities, and ornamental ponds. Its robust construction, high biological efficiency, and simple maintenance make it a reliable solution for both commercial and professional aquaculture operations.

• Stable biological purification with minimal maintenance
• Durable construction for long-term industrial use
• Flexible integration into various aquaculture systems