The Maxspect Gyre is the world's first "gyre"- generating water moving device for aquariums. Compared to traditional powerheads and wavemakers that are based on propeller nozzle flow technology, the Maxspect Gyre is based on advanced cross flow technology which produces massive horizontal water movement leaving little to no dead spots in its wake. Water movement mode: Constant Speed Mode Pulsing Mode Gradual Pulsing Mode Random Mode Alternating Gyre Mode Linking Methods Synchronized Anti Synchronized Time Delay Reversed Time Delay 2 24hours Preset Cycle: 1. Tidal Preset 2.Oceanic Gyre Cycle Specification Power Consumption: 10w-80w Flow Rate: 210000-22500 L/h (5550-6000 Gal/h) Suitable Aquarium Size: 750-3800L (200-1000 Gal) Power Supply Unit: 100-240V / 50-60Hz Dimension (L x W x H): 378mm × 95mm × 52mm (14.8” × 3.8” × 2”) Weight: 1000g(2.2 lb) Cable Length (Controller to Pump): 2m(6.6’) Cable Length (Power Supply to Controller): 1.5m(4.9’) Glass Thickness (Standard Mount): 30mm(1.2”) The Box Includes: Controller Pump Power Supply Unit