Nyos Protein Skimmers are one of the most efficient and reliable skimmers on the market today. They are backed by one of the top companies, Ecotech Marine. These skimmers us what they refer to as a "hybrid wheel", incorporating both needle and lattice technology into a single high-performing unit. This wheel chops the air up as it enters the skimmer chamber which then attracts DOC (dissolved organic compounds) to the bubbles where they raise through the neck and burst being collected in the cup at the top of the skimmer. This in turn can help aquarium water clean. Should you have any questions as to which skimmers is right for you don't hesitate to contact us.