High water temperatures can pose a serious threat to aquatic life, especially in larger aquariums or during hot seasons. The ISTA Cooling Fan – 4 Fan model offers an affordable and reliable solution by enhancing surface evaporation. This natural cooling method can reduce the water temperature by 3–5 °C, providing a stable environment for both plants and animals.

Designed with durable, corrosion-resistant plastic and aluminum, this fan features ball bearing construction for long-lasting, quiet performance. Its compact form ensures easy installation and integration into existing aquarium setups. Operating on a safe 12V power supply, it’s a low-consumption alternative to more complex chiller systems.

This fan is recommended for aquariums over 200 liters, where larger water volumes require effective temperature control. Whether you’re maintaining a planted aquascape or housing sensitive species, this cooling unit ensures comfort and health during high-heat periods. Trusted by experienced aquarists, it’s a valuable addition to any temperature-sensitive setup.

Technical specifications:

Dimensions: 38.9 cm × 13.2 cm × 3.9 cm
Power supply: 12 V
Cooling effect: approx. 3–5 °C temperature drop
Recommended tank size: over 200 liters
Material: corrosion-resistant plastic and aluminum
Number of fans: 4