ISTA Cooling Fan (Hanging) CHARACTERISTICS Elegant and stylish design. Compact size for space saving. Easy in installation. Efficiently cool down water temperature up to 2~4 degrees Celsius. Lower down chances of protein floats emerging on water surface. Special design allows fan motor to stay away from tank surface. No more short circuit and danger concern. DC 12 V output assures safety for operation. 2-stage speed control. Energy saving. Powerful output. How to use: Hang the fan outside the wall of tank; fasten it tightly with screw.
