MJ-GF Series Superior Cross Flow Technology Explained Comparing to traditional powerheads and wavemakers, based on propeller nozzle technology, our latest gyre generator is based on crossflow technology. Propeller Nozzle Technology Dead spots with relatively poor water movement. Very strong flow in the center, making coral placement very difficult. Very weak flow near the other end of the aquarium. Cross Flow Technology Virtually no dead spots. Evenly distributed flow rate throughout the entire aquarium. Water bounces back from the other side to create full circulation.ie.generating "gyre flows". Near-Silent Operation With Sine Wave Technology Electricity current alternates in a much smoother pendulum while using Sine Wave Technology Integrated Controller with Large Display Fully Programmable 24 hours gyre flow cycle Specifications Model MJ-GF2K MJ-GF4K Dimensions 8.78in x 2.83in x 1.5in 12.4in x 3.15in x 1.69in Power Consumption 25w 45w Flow Rate ~1849GPH ~3962GPH Weight 16.1oz 25.1oz Glass Thickness 0.5in 0.7in Power Supply Unit Input: 100-240VOutput: 24V/2A Input: 100-240VOutput: 24V/2A
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