Blue Reef Chromis (Chromis cyaneus) biofiltration Gyre 2K Pump Features & Hydor is pleased to Gyre 2K Pump Features & Benefits Unique Gyre Flow: Virtually Eliminates Dead Spots Evenly Distributed Linear Flow Discrete Design Can Be Mounted Vertically or Horizontally Can Be Mounted Close to the Water Surface Waterproof Magnet Mounts Twin Directional Flow Cages Includes 2 Sets of Propellers: Orange and Black HYDROS WaveEngine Direct Drive Compatible 1 Year Limited Warranty The IceCap 2K Gyre uses officially licensed technology by Maxspect a red iris Reef Compatible: Yes These fish are known to inhabit the upper region of the aquarium and encourage other timid species to come out of hiding