Dymax Protein Skimmer LS-10 is a high performance protein extractor. It’s powerful injection flow rate pumped into the reacting chamber, produces a tremendous number of tiny bubbles. The foam collected by the skimmer is made up by protein and other organic compound. These organic wastes must be removed before they turn into nitrate and nitrite. The fine bubbles produces by the skimmer also helps to increase oxygen dissolved and ORP (oxidation reduction potential) level. Specifications: Diameter 90mm, Height 405mm, Max.Cap.400L