A protein skimmer, also known as a foam fractionator, is an excellent nutrient export tool for the saltwater aquarium. This is the main reason it has become so popular. They work 24/7 and constantly remove unwanted organics, oils and proteins that will otherwise lead to unwanted problematic algae outbreaks taking over your tank. These organics, if allowed to accumulate, can also kill corals or at least make it very difficult for them to grow and thrive.
How Does It Work?