The SPECK BADU Koi Sand Filter 4 is engineered for larger koi ponds requiring robust, high-rate filtration without sacrificing water safety. Featuring a 28″ UV-stabilised polyethylene tank, this unit holds 160 kg of sand and includes a side-mounted multiport valve, ABS internals, and a quick-release lid. Designed for clean, fish-safe operation, it provides streamlined maintenance while ensuring pristine aquatic environments.

• Key Features

• 28″ filter diameter with 0.29 m² surface area
• Roto-moulded polyethylene tank: non-toxic, UV-resistant, and durable
• 160 kg sand capacity (4 × 40 kg bags)
• Side-mounted multiport valve for convenient control
• ABS high-flow internals with automatic air relief
• Twelve angled free-flow internal collector arms
• Quick-release lid for easy access during cleaning
• 18-month warranty on tank; 60-month warranty on valve and internals

✓ Benefits

✓ Safe and non-toxic—ideal for koi and sensitive pond ecosystems
✓ Designed for large ponds with substantial filtration needs
✓ Efficient maintenance—no tools needed for access
✓ Built for long-term outdoor use and performance
✓ Delivers consistent water clarity and healthy biological conditions

Technical Specifications

• Filter Size: 28″ (approx. 710 mm)

• Filter Area: 0.29 m²

• Sand Capacity: 160 kg

• Maximum Flow Rate: 14.5 m³/h at 80 kPa

• Operating Pressure: Up to 2.5 bar

• Weight (Empty): 19.06 kg

• Recommended Pond Size: Up to 15,000 L

• Turnover Capacity:

  • 4-hour: ±58,000 L

  • 6-hour: ±87,000 L

  • 8-hour: ±116,000 L

What You Get

1 × SPECK BADU Koi Sand Filter 4
Includes quick-release lid, side-mounted multiport valve, and internal components