Cad Lights BR-1 Conic Bio Reactor for Aquariums, 200-Gallon 3-way re-circulating valve giving you full control of the flow speed at your hands Advanced and unique Rhythmic Tumbling motion that moves every pellet evening and prevents clumping True all-in-one design with a built-in pump inside of the bio reactor in the bottom chamber that offers space-saving Self-priming Includes all the pump; fittings; plumbing and union Designed for immediate use Dimensions: 6"x6"x12"