TUNZE® Aquawind

Low-noise aquarium ventilator provided with a 5V low-voltage power supply unit. Moreover, it comes with an attachment clamp, which can be used for every aquarium edge up to 25 mm (.98"). It produces a laminar air movement over the surface of the water, accelerating the evaporation process and thus achieving a cooling of the water. In standard aquariums, the cooling may amount to 1° to 2°C (1.8° to 3.6° F) on 500 liters (132 USgal.).
Dual speed adjustment, with power supply unit and universal holder. 
Dimensions (L x W x H): 270 x 100 x 30 mm (10.6" x 3.9" x 1.13")