The Extreme skimmers are powered by the high performance Italian Sicce pumps. The skimmer has a wedge pipe output which allows for more adjustment of the skimmer compared to ball valves. The Sicce pump has an improved venturi design and soft pinwheel impeller. The skimmer also includes a piece of mesh and yellow impeller to allow the option of mesh modding their pump. The skimmer produces up to 35scfh – 37scfh of air pull using the provided pinwheel impeller. (Air results will vary depending on aquarium setup.) Each Sicce pump draws less than 30watts of electricity. The collection cup has a quick release neck for easy removal for cleaning. It requires 1/2 inch of clearance to remove the cup. The Extreme skimmers uses metric plumbing parts.