Power Sweep power head has a full 60 degree of rotation the Power Sweep replicates natural water currents without the expense of a wave maker, The Power Sweep is fully submersible and can be used alone or in conjunction with an under gravel filter system, for aquariums up to 30 gallonsUL listed for safetyFits all undergravel stem sizes from 3/4 to 1 1/8 110 Volts- 60 HzMaximum of 160 gallons per hour 11 Watts, Features:, For aquariums up to 30 gallons, For reef tanks live plant tanks community tanks and undergravel filters, Free pre-filter and deluxe mounting bracket enclosed, Rotating head keeps reef tanks healthy, SKU: RPS21403