Neptune Systems SKY LED Aquarium Light marine pure Gyre 4K Pump Features & Size:XXLarge (7"+) Gyre 4K 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 and WaveEngine LE Direct Drive Compatible 1 Year Limited Warranty Copper test kits that measure chelated copper will help you to actively monitor copper levels when using Mardel Coppersafe® solution Advanced Thermal Management System Those without an Apex can wirelessly connect to the SKY over BT and operate it via their mobile devices