Mantis Media Reactor MR 200-S is equipped with a controllable feed pump and can hold two different filter media. It is perfect for use with activated carbon, GFO or Bio-Pellets. High-volume up-flow design with easy assembly. MR200-S - is recommended for aquariums of 500-1000ltrs. DIMS: L160 x W165 x H480mm, Diameter 130mm, Total media capacity 3000ml.