Reef Octopus USB Smart Fan - 4 Inch Tangs & Surgeonfish Small aquariums can change temperature

Small aquariums can change temperature quickly

One side has a 3/4 inch FPT threaded connection

Extended-activity formula is more effective than standard iodide solutions

It gives aquarists a controlled in-tank space while still allowing the fish to remain in the aquarium water

Two cylindrical pre-filter foams

Reef Octopus USB Smart Fan - 4 Inch Tangs & Surgeonfish Small aquariums can change temperatureReef Octopus USB Smart Fan 4 Inch The Reef Octopus USB Smart Fan 4 Inch is a temperature responsive aquarium ventilation fan for canopies, enclosed stands and equipment cabinets where heat buildup needs to be reduced. Smart Cooling Fan for Aquarium Cabinets and Canopies This 4 inch smart fan automatically increases or decreases fan speed based on the ambient temperature around the thermostat. It is useful for moving warm air out of enclosed aquarium