The AquaFuge2 PS Refugium incorporates a protein skimmer into our simple hang on design with newly improved black acrylic backing to prevent light from transfering to the main aquarium. Providing all the great benefits of our other AquaFuge, this model will also remove any excess organics flowing through the refugium while also providing for oxygenation of any marine system. The AquaFuge2 PS Refugium is available in two sizes and the protein skimmer is operated by an included Rio 600RV. Recently redesigned with a black acrylic backing to prevent light from transfering to the main aquarium, each model comes with a powerhead and features a unique baffle system. This prevents the substrate and organisms from being disturbed yet also allows enough water to flow through the eliminate any stagnant areas. Also includes the New Bubble Eliminator to stop bubbles from entering the tank from the outlet. The AquaFuge2 PS Refugium provides ideal growth conditions for food items, such as copepods and ampipods, to feed invertebrates and fish in the main tank. It provides a controlled growing area for macroalgae, which can be used to reduce "nuisance" algae in the main tank and provided a "nursery" area for a variety of organisms.