Maxspect Jump 2K Gyre (7000lph) MJ-GF Serie Maxspect Gyre's Crossflow Technology creates a even flow that helps eliminate dead spots and is one of the best wavemaker alternative for most aquariums. Maxspect Jump 2K Gyre Generator (25w) - 7000lph The new Jump Gyre has a few differences to previous models which include a central magnet connection where the previous models were a dual magnetic connection. Modes available: Alternation Gyre Mode Constant Speed Mode Pulsing Mode Gradual Pulsing Mode Random Mode 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 crossflow technology which produces massive horizontal water movement leaving little to no deadspots in its wake. Why gyre generator and not a wavemaker? Wavemakers excel in making waves, while waves are spectacular to watch in motion, they are in fact moving the majority of the water vertically up and down, with relatively low horizontal movement, especially near the bottom of the aquarium. On the other hand, gyre generators excel in moving sheer flow of water from one side of the aquarium to the other. The sheer flow of water is so strong that i would bounce back from the opposite site to achieve full circulation within an aquarium, ie. generating 'gyre flows'. Revolutionary Crossflow Technology Discrete design Virtually No Dead spots Evenly Distributed Flow Gyre Generating Flows Model MJ-GF2K MJ-GF4K Dimension L223 x W72 x H38mm L8.78 x W2.83 x H1.5inch L308 x W80 x H43mm L12.1 x W3.15 x H1.69inch Power Consumption 25w 45w Flow Rate 7,000 L/H (1,849 US Gal/H) 15,000 L/H (3,962 US Gal/H) Suitable for Aquarium 50-250L /13-66 US Gal 50-450L /13-118 US Gal Weight (Pump Unit) 457g/16.1oz 711g/25.1oz Glass Thickness : Standard 15mm/0.59inch 20mm/0.79inch Power Supply Unit Input: 100-240V/ 50-60HZ Output: 24V/2A Input: 100-240V/ 50-60HZ Output: 24V/2.5A (MJ-GF2K)