40mm Cooling Fan For Fluval Flex 35L Aquarium - Black, Low-Noise Active Cooling To Reduce Water Temperature

About This Product

Got a Fluval Flex 35L aquarium and noticed the water getting warm from the LED lights? This 40mm black cooling fan is designed to fit right into the feeding port on the tank’s lid—no drilling or modification needed. It actively pulls hot air out, helping to lower the water temperature and keep your fish comfortable.

The fan is compact (40x40x10 mm) and uses a low-noise DC motor, so it runs quietly without disturbing your home environment. The black plastic frame blends seamlessly with the Fluval Flex hood, and it’s lightweight so it doesn’t stress the lid.

Installation is plug-and-play: just place it over the opening and secure it (usually with included clips or adhesive). It’s a simple, effective solution to prevent overheating in smaller tanks, especially in warmer rooms or with long light cycles. Your fish will thank you for the cooler, more stable environment!

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