Comparing to traditional powerheads and wavemakers, based on propeller nozzle technology, our latest gyre generator is based on crossflow technology. Propeller Nozzle Technology ① Dead spots with relatively poor water movement. ② Very strong flow in the center,making coral placement very difficult. ③ Very weak flow near the other end of the aquarium. Cross Flow Technology ① Virtually no dead spots. ② Evenly distributed flow rate throughout the entire aquarium. ③ Water bounces back from the other side to create a full circulation.ie.generating "gyre flows". Near-Silent Operation With Sine Wave Technology Sine Wave Pattern Electricity current alternates in a much smoother pendulum while using Sine Wave Technology Sine Wave Technology Decibel Level Traditional Pattern Electricity current alternates in a very sharp pattern while using traditional Technology Traditional Technology Decibel Level Achieve full circulation within the aquarium with ease Integrated Controller with Large Display Fully Programmable 24 hours gyre flow cycle Water Movement Mode Constant Speed Mode Pulsing Mode Gradual Pulsing Mode Random Mode Alternating Gyre Mode 24 hours gyre flow cycle illustrated Specification Model MJ-GF2K MJ-GF4K Dimension L223 x W72 xH38mmL8.78 x W2.83 xH1.5inch L308 x W80 xH43mmL12.1 x W3.15 xH1.69inch PowerConsumption 25w 45w Flow Rate 7,000 L/H(1,849 US Gal/H) 15,000 L/H(3,962 US Gal/H) Suitable forAquarium 50-250L/13-66 US Gal 50-450L/13-118 US Gal Weight(Pump Unit) 457g/16.1oz 711g/25.1oz GlassThickness: Standard 15mm/0.59inch 20mm/0.79inch PowerSupplyUnit Input: 100-240V/50-60HZOutput: 24V/2A Input: 100-240V/50-60HZOutput: 24V/2.5A
