Mini USB Aquarium Cooling Fan 5V 3W | Quiet, Speed Control

Keep Your Aquarium at the Perfect Temperature

Maintain a healthy, stable environment for your fish, shrimp, and aquatic plants with this Mini USB Aquarium Cooling Fan. Running on just 5V/3W, it delivers powerful airflow to lower tank water temperature by approximately 3°C — ideal for tropical fish tanks, shrimp tanks, and planted grass tanks alike. Made in Mainland China.

Key Features

• Rapid Temperature Reduction: Efficiently lowers tank water temperature by approximately 3°C, keeping aquatic life comfortable.
• Ultra-Slim Wall-Mounted Design: Only 3.8 cm thin — mounts easily and discreetly on the side of your tank without taking up space.
• Adjustable Speed Settings: High and low gear settings let you dial in airflow based on your indoor temperature and tank needs.
• Universal Clamp Mount: Adjustable clamp fits tank walls up to 8mm thick — compatible with most standard aquariums.
• USB Powered (5V / 3W): Plugs into any USB power source — a phone charger, USB hub, or power bank works perfectly.
• Whisper-Quiet Operation: Designed for near-silent performance so your aquarium remains a peaceful focal point in your home.
• Wide Temperature Range: Optimized for maintaining water temperatures between 16–32°C.
• No Battery Required: Simply plug in and go — no additional battery purchases needed.

Specifications

• Voltage: 5V
• Power: 3W
• Temperature Range: 16–32°C
• Fan Thickness: ~3.8 cm
• Max Tank Wall Thickness: 8mm
• Power Source: USB (no battery included)
• Country of Origin: Mainland China

Perfect For

Whether you keep tropical fish, freshwater shrimp, or a beautifully planted aquascape, this compact cooling fan is an essential tool during warmer months. It helps prevent heat stress in aquatic life by maintaining stable water temperatures — a critical factor in the health and vitality of your tank inhabitants.

For more guidance on maintaining healthy aquarium environments, visit the U.S. Fish & Wildlife Service aquatic life resource.

Explore More for Your Aquarium

Complete your aquatic setup with other great products from our store:

• Funny Pet-Themed Canvas Wall Art Print — a fun addition to any pet lover's home
• "1% Better Every Day" Motivational Canvas Poster — inspire your space

Learn more: Aquarium filter

Frequently Asked Questions

Q: What USB power source can I use with this aquarium cooling fan?

A: This aquarium cooling fan runs on 5V USB power at just 3W, making it compatible with virtually any standard USB power source — including phone chargers, USB wall adapters, laptop USB ports, and USB power banks. No special adapter is required.

Q: How much will this fan cool my fish tank?

A: The mini USB aquarium cooling fan is designed to lower water temperature by approximately 3°C through evaporative cooling at the water surface. Results may vary slightly depending on room temperature, humidity, and tank size, but it is most effective in tanks operating within the 16–32°C range.

Q: Is this fan suitable for shrimp tanks and planted tanks?

A: Yes! This cooling fan is ideal for shrimp tanks, planted grass tanks, and fish tanks alike. Its quiet operation and gentle, adjustable airflow make it a great choice for sensitive aquatic environments where noise and water disturbance need to be kept to a minimum.

Q: How do I install the aquarium cooling fan?

A: Installation is simple. The fan features an adjustable clamp that attaches to the rim or wall of your aquarium — compatible with tank walls up to 8mm thick. Just clip it on, aim the airflow across the water surface, plug it into a USB power source, and select your desired speed setting.

Q: Is the fan noisy during operation?

A: No — this aquarium fan is engineered for quiet, low-noise operation so it won't disturb your aquatic life or disrupt the peaceful ambiance of your space. It's a great choice for bedroom tanks or living room aquariums.