Includes powerheadIncludes protein skimmerFeatures a unique baffle system that prevents the substrate and organisms from being disturbed yet also allows enough water to flow through the eliminate any stagnant areasWater Capacity: 4.7 GallonsDimensions: 25" L X 4.5" W X 12" TDoes not include the lightThe AquaFuge 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.