The AquaClear Powerhead 50 is a multifunctional pump that delivers outstanding performance in a variety of applications. It can efficiently drive under-gravel filters circulate and aerate aquarium water and attach to filtration accessories such as the AquaClear Quick Filter to support crystal clear water conditions. The Powerhead 50 can be used to raise oxygen levels which is important when there are increases in water temperature or fish population as well as during the treatment of diseases. It can also be connected to drive protein skimmers which are essential devices for most marine aquariums. The Powerhead is indispensable in smaller reef aquariums where it can be easily hidden and still provide highly beneficial currents. Freshwater aquariums also benefit from additional currents in many applications. FOR MORE PRODUCT INFORMATION PLEASE CONSULT THE INTERNET.