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Reef Octopus

Reef Octopus 4" Smart Fan

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Reef Octopus 3" Smart Fan

The Reef Octopus USB Smart Fan will automatically increase or decrease the fan speed depending on the ambient temperature of the area surrounding the thermostat. Makes and 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.

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. Available in a 3in and 4in model.


  • Automatically ramps speed based on temperature
  • USB power end with safe low voltage power adapter
  • Plug and play operation
  • 16" thermistor cord



Fan Speed

  • 65 - 100 CFMs depending on surrounding temperature


  • 4.25" x 4.25" x 1"
  • Power Cable Length: 78"
  • Thermistor Length: 16"
  • The mounting screw holes are 4.13/105mm apart.

Fans are rated for 2000 hours. NOT INTENDED FOR CONTINUOUS USE.

Product code: 7999
Item No. LT-OCT-AF120