What is a protein skimmer/foam fractionator?
A protein skimmer, sometimes called a foam fractionator, is a device that removes dissolved organic matter from the aquarium before it can be broken down. The unit uses air driven against a water current to create dense foam. Organics in the water stick to the bubbles as they are pushed into a collection cup. The longer the contact time between the air and the water, the better foam production will be. These units are popular for reef systems and beneficial for the fish-only tank.
