About this item INDISPENSABLE REASON: In addition to being affected by the hot summer weather, and the air in the basement garage and other places is not circulated. The aquarium fish tank also generates a lot of heat every day, which comes from the water pump, the built-in filter, the wave pump and other equipment, especially the aquarium light, which emits the most heat. Coral tanks especially need to pay attention to water temp. So hygger aquarium chiller fan is a good choice, energy-saving and silent USEFUL FISH PRODUCT: In addition to the unique functional creation (timer/wind speed setting) of the hygger cooling fan, its own quality is also worthy of recognition. ABS plastic shell, sturdy and beautiful. The all-copper core motor and FDB bearings bring a big comfortable wind feeling while the working sound is not disturbing 5 LEVELS OF WIND: Not only need aquarium cooling equipment in hot summer, but also need it all year round. The hygger fish t