Mantis Media Reactor MR 100-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. MR100-S - is recommended for aquariums of 100-300ltrs. DIMS: L120 x W125 x H480mm, Diameter 90mm, Total media capacity 1500ml.