This aquarium cooling fan is capable to reduce water temperature and drop up to 2 ~ 4¡æ, meeting the daily use of fish tanks. It can be directly clamped on the aquarium glass that the thickness within 15mm, no additional installation methods are required, which is very convenient to use. Features: ? Aquarium Cooling Fan: The cooling fan is capable to reduce water temperature and drop up to 2 ~ 4¡æ, meeting the daily use of fish tanks. ? Easy to Use: This fan can be directly clamped on the aquarium glass that the thickness within 15mm/0.6in, no additional installation methods are required, and it is very convenient to use. ? Adjustable Fan Head: Adjustable brackets allow for a 30-degree movement of the head. You can control the direction of airflow according to your need. ? Safe & Practical: Great cooling fans made of tough plastics with high-security standards and ensure the safety of the fan. ?After-sales Service Guarantee: Any problem, please contact our store without hesitation.