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Dymax Vortex W-8 Cooling Fan, Black
SKU: DM-FNW8
- The Dymax Vortex W-8 Cooling Fan is a clamp-on aquarium fan that lowers water temperature through evaporative cooling by blowing air across the surface.
- It is designed for hobbyists managing overheated tanks during warmer months, with a flexible arm for adjustable airflow positioning.
- Can be connected to an aquarium thermometer for automated temperature-based control; compact and quiet operation.
Clamp-On Vortex W-8 Cooling Fan for Aquarium Temperature Control
The Dymax Vortex Cooling Fan is a straightforward, effective solution for hobbyists fighting summer heat or any tank running warmer than desired. It works through evaporative cooling: the fan blows a steady stream of air across the water's surface, which accelerates evaporation and draws heat out of the aquarium in the process. This is one of the most cost-effective ways to bring down tank temperature without the expense and complexity of a chiller.
Installation is simple. A built-in clamp attaches securely to the edge of most aquariums, and a flexible arm lets you position and angle the fan exactly where airflow is most effective. The fan can also be wired into an aquarium thermometer or controller for automated operation, turning on only when the temperature rises above a set threshold rather than running continuously.
The Vortex Fan is available in two sizes. The W-5 delivers 5.06 CFM of airflow and suits smaller tanks or supplemental cooling. The W-8 steps up to 10.5 CFM for larger tanks or situations needing more aggressive cooling. Both models run on 12V DC and operate compactly and quietly.
Key Features:
- Evaporative cooling fan; blows air across the water surface to lower aquarium temperature
- Built-in clamp for secure attachment to most aquarium edges
- Flexible arm allows precise airflow positioning and angle adjustment
- Can be wired to an aquarium thermometer or controller for automated, threshold-based operation
- Compact and quiet operation
- Easy installation; no tools or drilling required
- 12V DC operation on both models
Ideal For:
- Hobbyists managing summer heat or a consistently warm tank without investing in a chiller
- Smaller to mid-size tanks where the W-5's airflow is sufficient for effective cooling
- Larger tanks or situations needing more aggressive evaporative cooling, where the W-8's higher CFM is appropriate
- Anyone who wants automated, threshold-based cooling by pairing the fan with an existing aquarium controller or thermometer
Pro Tips:
- Match fan size to tank size and cooling need. The W-5 (5.06 CFM) is suited to smaller tanks or situations where modest cooling is needed. The W-8 (10.5 CFM) is the better choice for larger tanks or warmer climates where more airflow is required to meaningfully lower temperature.
- Top off evaporated water more frequently when running a cooling fan. Evaporative cooling works by accelerating water loss to evaporation. Running a Vortex Fan, especially the higher-output W-8, will increase your tank's evaporation rate. Pair with an auto top-off system if you do not want to manually top off more often.
- Position the flexible arm to maximize surface airflow, not just proximity. The fan works best when air moves directly across the water's surface rather than at an angle that misses most of the surface area. Adjust the arm until you can feel consistent airflow across the water when testing by hand.
- Pair with a thermometer or controller for hands-off operation. Wiring the fan to a temperature-triggered controller means it only runs when needed, which reduces unnecessary evaporation and noise compared to running continuously.
What's Included:
1x Dymax Vortex Cooling Fan, W-8 (Black)
Specifications:
- Dimensions: 3.5 x 3 x 7in
- Rated Voltage: DC 12V
- Max Air Flow: 10.5 CFM
- Max Air Pressure: 9.8mmH2O
- Operating Temperature: -10°C to 60°C
- Construction: Clamp-on housing with flexible positioning arm
- Color: Black
Instructions:
- Position the built-in clamp on the edge of your aquarium and tighten securely.
- Adjust the flexible arm to angle the fan directly across the water's surface.
- Connect the fan to a 12V DC power source.
- For manual operation, power on the fan directly. For automated operation, wire the fan to an aquarium thermometer or controller set to a temperature threshold.
- Monitor evaporation rate after installation and adjust your auto top-off system or manual top-off schedule as needed, since evaporative cooling increases water loss.
- Periodically check the clamp and arm position to confirm the fan remains securely attached and properly angled.