Hygger Adjustable Cooling Fan The Hygger Adjustable Cooling Fan is a compact aquarium cooling fan for helping lower water temperature through surface evaporation. It is designed for freshwater and saltwater aquariums where warm room temperatures, lighting, pumps, or seasonal heat can push the aquarium above the desired range. Hygger Adjustable Cooling Fan Overview This fan uses a 7-wing fan wheel, adjustable fan head, external controller, and multiple wind-speed settings to provide flexible aquarium cooling. It is a practical option for small aquariums, reef tanks, shrimp tanks, axolotl systems, and other setups where a full aquarium chiller is not necessary or practical. The controller allows speed adjustment and timer operation, helping users balance cooling performance with noise and daily convenience. Aquarium Cooling Fan Features Helps reduce aquarium water temperature through evaporative cooling. 7-wing fan wheel moves air across the aquarium surface while maintaining low-noise operation. Five wind-speed levels allow gentle or stronger cooling depending on room conditions. External controller provides timer settings for 0.5H, 1H, 2H, 4H, and 12H operation. Adjustable fan angle lets users direct airflow across the aquarium surface. Suitable for freshwater and saltwater aquariums when installed on compatible glass thickness. Energy-efficient DC operation helps provide cooling without using a large compressor-style chiller. Hygger Adjustable Cooling Fan Specifications Product type: Aquarium cooling fan UPC: 6976286983112 Hygger model: HG051 Dimensions excluding mount: 5.1" x 5.1" x 1.5" Input: 100-240V Output: 12V / 2A Wind speed levels: 5 Timer settings: 0.5H, 1H, 2H, 4H, and 12H Maximum glass thickness: 0.45" / 11 mm Application: Freshwater and saltwater aquarium cooling Cooling Fan Compatibility Notes The Hygger Adjustable Cooling Fan is intended for aquariums with compatible rim or glass thickness and should be mounted securely before use. Evaporative cooling increases water evaporation, so monitor water level and salinity in saltwater systems. Use with an ATO system when appropriate to help maintain stable water level and salinity. Using the Hygger Adjustable Cooling Fan Clamp the fan securely to the aquarium, angle the fan head toward the water surface, connect the controller and adapter, then select the desired speed and timer setting. Monitor aquarium temperature during initial use and adjust the fan speed based on the target temperature, room conditions, and evaporation rate. What's Included 1 x Hygger Adjustable Cooling Fan 1 x Controller 1 x Power Adapter 1 x User Manual