Reef Octopus

AF80 USB Smart Fan - 3 inch

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The Reef Octopus USB Smart Fan automatically increases or decreases the fan speed depending on the ambient temperature of the area surrounding the thermostat. Fan will increase speed at 90 degrees F and continue to increase until full speed at 110 degrees F where it will reach its maximum CFM. Its ability makes the Smart Fan an excellent choice for aquarium canopies, enclosed stands & equipment cabinets to help regulate the temperature within. Keeping these areas cool will help reduce heat transfer into your aquarium and avoid dangerous temperature spikes while also ensuring long lasting performance of your equipment.



  • Automatically ramps speed based on temperature
  • USB power end with safe low voltage power adapter
  • Plug and play operation
  • 16" thermistor cord
  • Available in a 3 inch and 4 inch model



Model Dimensions Fan Speed Power Cable Length Thermistor Length Mounting Screw Holes

AF80 3" Smart Fan

3.15" x 3.15" x 1" 25 - 55 CFMs depending on
surrounding temperature
78" 16" 2 7/8" / 72mm apart

AF120 4" Smart Fan

4.72" x 4.72" x 1" 65 - 100 CFMs depending on
surrounding temperature
78" 16" 4.13" / 105 mm apart
Fans are rated for 2000 hours and are not intended for continuous use.
More Information
Product Name AF80 USB Smart Fan - 3 inch - Reef Octopus
SKU 250040
UPC 6950291252081
Power Cord Length 6 Feet
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