Speck BADU Koi 2-Bag Sand Filter — Koi Pond Filtration

The Speck BADU Koi 2-Bag Sand Filter is designed specifically for koi ponds and aquatic systems up to 57,000 litres. This is not a swimming pool filter — it’s engineered for the unique demands of koi pond filtration, where the sand works as mechanical pre-filtration to remove fish waste, organic matter, and suspended particles before water passes through biological filtration stages.

Key Features

Quick-release lid for easy access during backwashing and sand maintenance. Side-mounted multiport valve for simple operation. Roto-moulded one-piece polyethylene tank — no seams, no leaks. Automatic air relief system prevents pressure buildup. All materials are non-corrosive, UV resistant, and non-toxic — safe for fish. Twelve angled free-flow internal collector arms for efficient water distribution.

Specifications

Filter area: 0.21m² (20”). Sand capacity: 80kg (2 x 40kg bags — use koi-grade filter media, not standard pool sand). Filter weight: 13.46kg (excluding sand). Flow rate: 9.5m³/h at 80kPa. Pond size rating: up to 57,000 litres. Recommended pump: 0.45kW. Warranty: 18 months on tank, 60 months on valve and internals.

Important — Koi Ponds, Not Swimming Pools

This filter is designed for koi ponds and water features. Do not use chlorine or chemical pool sanitisers in koi pond systems — these are toxic to fish. Koi pond filtration relies on mechanical and biological filtration, not chemical sanitisation.