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MJ-GF Pumps

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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.

Crossflow Technology

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".

Propeller Nozzle 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.

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

Fully Programmable 24 hours gyre flow cycle

Integrated Controller with Large Display

24 hours gyre flow cycle illustrated

Water Movement Mode

Modes Description

 c1  Constant Speed Mode
 c2  Pulsing Mode
 c3  Gradual Pulsing Mode
 c4  Random Mode
 c11  Alternating Gyre Mode

Specification

Dimensions

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
Model MJ-GF2K
Dimension L223 x W72 x
H38mm
L8.78 x W2.83 x
H1.5inch
Power Consumption 25w
Flow Rate 7,000 L/H
(1,849 US Gal/H)
Suitable for Aquarium 50-250L
/13-66 US Gal
Weight (Pump Unit) 457g/16.1oz
Glass Thickness: Standard 15mm/0.59inch
Power Supply Unit Input: 100-240V/
50-60HZ
Output: 24V/2A
MJ-GF4K
Model MJ-GF4K
Dimension L308 x W80 x
H43mm
L12.1 x W3.15 x
H1.69inch
Power Consumption 45w
Flow Rate 15,000 L/H
(3,962 US Gal/H)
Suitable for Aquarium 50-450L
/13-118 US Gal
Weight (Pump Unit) 711g/25.1oz
Glass Thickness: Standard 20mm/0.79inch
Power Supply Unit Input: 100-240V/
50-60HZ
Output: 24V/2.5A