BAOSHISHAN 4-Head Aquarium Fan with Adjustable 5 Speeds & 5 Timer

• [Rapid Cooling to Protect Fish] - Our aquarium fan has 4 high-performance heads, accelerates water evaporation to reduce the water temperature in a 20-gallon aquarium by up to 6°F in 3-5 hours—ensuring your fish tank stays cool and maintains the stable temperatures your fish need, even on the hottest days
• [Adjustable 5-Speed Control] - Choose from different speeds to to suit the unique needs of your aquatic pets and the season. Dial down for gentle cooling (great for delicate species) or ramp up in heat—​​low speeds work perfectly for 10-gallon tanks, high speeds for 20-gallon tanks
• [Smart 5-Timer Function] - Has 0.5, 1, 2, 3, or 12 hours timer Setting option for customizable control of aquarium cooling fan working time. This allows you to automate airflow cycles for day/night use, seasonal needs, or energy saving operations, ensuring a stable aquarium
• [180° Precision & Quiet Design] - Our aquarium fan heads rotate through a wide 180°, which let you direct cooling exactly where it’s needed—while running at just 30-40 dB so it cools day or night without disrupting sleep, work, or family time
• [Saltwater & Freshwater Safe] - Made with sturdy, corrosion-resistant plastic, this fan thrives in any aquatic environment. ​​The clamp fits tanks up to 0.6-inch thick​​, so it installs easily on most standard-sized aquariums without hassle

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