- Safe and Durable: Crafted from high-quality ABS material, this fish tank fan is designed to withstand wear and tear. Its reusable and safe construction ensures long-lasting performance, effectively lowering water temperatures to maintain a comfortable environment for your aquatic pets. - USB Powered: The aquarium cooler operates on USB power, eliminating the need for batteries. Its universal USB port allows for easy connectivity to laptops, power banks, or wall chargers, providing versatile power options. - Adjustable Fan Speed: Tailor the cooling experience with two operational modes and adjustable wind speeds. Select the weak wind mode for gentle airflow or switch to the strong wind mode for more robust cooling, catering to your aquarium's specific needs. - External Installation: Designed for external mounting on your aquarium's outer wall, this fan saves valuable tank space while ensuring your fish remain undisturbed. It refreshes the water without intruding on your aquatic environment. Use Scenarios: 1. Ideal for warm climates where water temperature may rise, helping to maintain a stable habitat for your fish. 2. Perfect for aquariums that house sensitive species requiring specific temperature ranges, ensuring their health and wellbeing. 3. Great for use during seasonal temperature fluctuations, providing a reliable cooling solution to protect your aquatic ecosystem. Enhance your aquarium's environment with this efficient and user-friendly cooling fan, designed to keep your fish happy and healthy.