Filter Technic > External Filters

External Filters – high-performance filtration with a clean and unobstructed aquarium look

External filters are among the most efficient filtration systems available. With their large filter volume and powerful biological capacity, they are ideal for medium to large aquariums. One key advantage: All equipment is located outside the tank, usually hidden inside the cabinet. This makes the aquarium look cleaner, more natural and visually appealing, while providing more space inside the tank for fish, plants and aquascaping.

Modern external filters operate energy-efficiently and quietly, and feature modular filter baskets that can be filled with mechanical, biological and optional chemical media. This allows for crystal-clear water, stable parameters and long-term biological balance.

Many models include shut-off valves, quick-release connectors and self-priming functions, making installation and maintenance much easier. Enhanced sealing systems, reinforced hose connections and leak-resistant construction ensure a safe and reliable operation when properly installed and maintained.

External filters are ideal for planted tanks, community aquariums, aquascapes and sensitive fish species. At Aquaristikshop, you’ll find a wide selection of powerful external filters as well as matching hoses, media and spare parts.

Discover high-performance external filters – for outstanding water quality, a clean aquarium appearance and more space for beautiful layouts.