Diagram of a modern protein skimmer with a needlewheel pump Another diagram of a needle wheel impeller pump with a modern protein skimmer. This should clear up a lot of confusion with protein skimmers.Read (adsbygoogle = window.adsbygoogle || []).push({}); Ryan GrippRyan Gripp founded Reef Builders in 2006. He writes about technology, industry and other associated news relating to saltwater fish tanks. He went to Depaul University and has been keeping reef tanks for over 15 years.Share This Previous ArticleDiagram of a modern reef aquarium with sump and refuge Next ArticleDiagram of Fish Only with Live Rock Aquarium Jul 11, 2007