The BM Cooling Fan 100 (Blue Marine) is a cooling fan for aquariums, suitable mainly for small saltwater and freshwater systems. It uses evaporative cooling, blowing air across the water surface to lower the temperature.

• Suitable for aquariums: up to approximately 100 liters.
• Number of fans: 2 fans.
• Temperature reduction: approximately 2–4°C (depending on room temperature, evaporation, and whether the lid is open/closed).
• Mounting: clip-on at the edge of the aquarium.
• Maximum glass thickness: approximately 25 mm.
• Power consumption: approximately 5.5 W, with 12 V power supply.