Cooling module with 4 fans

This BOYU FS-604 module is for aquarists whose tank water runs too warm and needs active cooling rather than passive ventilation. It is rated to lower water temperature by up to 4°C and mounts directly on the tank wall, so it does not take up floor or cabinet space.

Why it matters

• Four fans: the unit has four separate fans, so cooling is distributed across the water surface rather than delivered by a single source.
• Individual airflow angle: each fan can be adjusted separately, letting you direct the air where the cooling is needed most.
• Wall mounting: the module attaches to the side of the tank, keeping the top of the aquarium free for lighting and covers.
• Low noise: rated below 30 dB, which matters for rooms where the aquarium is kept close to living or sleeping areas.

Specifications

• Brand: BOYU
• Model: FS-604
• EAN: 6941855201690
• Power: 16 W
• Dimensions: 390 x 128 x 48 mm
• Noise level: <30 dB
• Maximum water temperature reduction: up to 4°C
• Weight: 0.6 kg

What it works with

The FS-604 belongs to the aquarium temperature and automation range, alongside heaters, cooling accessories and thermometers. It is intended for freshwater or aquatic exotic setups where temperature control is needed, and it pairs with a heater or thermometer to keep the water within a stable range. Check that the tank wall and the 390 mm length of the module fit your aquarium before ordering.