[Skip to main content](#tm-main) [ ![](https://www.maxspect.com/media/yootheme/cache/54/maxspect-logo-mobile-5480c86a.png)](https://www.maxspect.com/en/) - [InnovateSeries](https://www.maxspect.com/en/innovate-series.html) - [JumpSeries](https://www.maxspect.com/en/jump-series.html) - [ProfessionalSeries](https://www.maxspect.com/en/professional-series.html) - [Smart Aquarium ](https://www.maxspect.com/en/smart-aquarium.html) - [Nano-Tech& Bio-Media](https://www.maxspect.com/en/nano-tech-bio-media.html) - [CoralTools](https://www.maxspect.com/en/coral-tools.html) - [Accessories ](https://www.maxspect.com/en/accessories.html) - [Supportand Downloads](https://www.maxspect.com/en/support-and-downloads.html) - [Where to buy ](https://www.maxspect.com/en/where-to-buy.html) [ ![](https://www.maxspect.com/media/yootheme/cache/54/maxspect-logo-mobile-5480c86a.png)](https://www.maxspect.com/en/) # MJ-GF Pumps ## layouts ![](https://www.maxspect.com/images/Products/Jump/MJ-GF/710.png) ### 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 ![](https://www.maxspect.com/media/yootheme/cache/06/pic3-06fbdada.png) ![](https://www.maxspect.com/media/yootheme/cache/66/pic4-66203dfa.png) ### 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 ![](https://www.maxspect.com/media/yootheme/cache/bd/pic33-bd83a892.png) ![](https://www.maxspect.com/media/yootheme/cache/d4/pic44-d4582e3f.png) ### 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 ![](https://www.maxspect.com/images/Products/Professional/commercia-gyre-flow-pump/pic5.png)Electricity current alternates in a much smoother pendulum while using Sine Wave Technology ![](https://www.maxspect.com/images/Products/Professional/commercia-gyre-flow-pump/pic55.png)Sine Wave Technology Decibel Level ## Traditional Pattern ![](https://www.maxspect.com/images/Products/Professional/commercia-gyre-flow-pump/pic555.png)Electricity current alternates in a very sharp pattern while using traditional Technology ![](https://www.maxspect.com/images/Products/Professional/commercia-gyre-flow-pump/pic5555.png)Traditional Technology Decibel Level --- ## Achieve full circulation within the aquarium with ease [ ![](https://www.maxspect.com/media/yootheme/cache/38/flow1-388feaa7.jpg) ](https://www.maxspect.com/images/Products/shared-folder/pumps/flow1.jpg) [ ![](https://www.maxspect.com/media/yootheme/cache/2f/flow2-2fc51e65.jpg) ](https://www.maxspect.com/images/Products/shared-folder/pumps/flow2.jpg) --- ## Fully Programmable 24 hours gyre flow cycle [ ![](https://www.maxspect.com/images/Products/Jump/MJ-GF/40.png) ](https://www.maxspect.com/images/Products/Jump/MJ-GF/40.png)### Integrated Controller with Large Display [ ![](https://www.maxspect.com/images/Products/Jump/MJ-GF/50.png) ](https://www.maxspect.com/images/Products/Jump/MJ-GF/50.png)### 24 hours gyre flow cycle illustrated [ ![](https://www.maxspect.com/images/Products/Jump/MJ-GF/80.png) ](https://www.maxspect.com/images/Products/Jump/MJ-GF/80.png)### Water Movement Mode ### Modes Description | ![c1](https://www.maxspect.com/images/Products/shared-folder/pumps/c1.png) | Constant Speed Mode | |---|---| | ![c2](https://www.maxspect.com/images/Products/shared-folder/pumps/c2.png) | Pulsing Mode | | ![c3](https://www.maxspect.com/images/Products/shared-folder/pumps/c3.png) | Gradual Pulsing Mode | | ![c4](https://www.maxspect.com/images/Products/shared-folder/pumps/c4.png) | Random Mode | | ![c11](https://www.maxspect.com/images/Products/shared-folder/pumps/c11.png) | Alternating Gyre Mode | --- ## Specification [ ![](https://www.maxspect.com/images/Products/Jump/MJ-GF/60.png) ](https://www.maxspect.com/images/Products/Jump/MJ-GF/60.png)### 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 | #### Follow Us ![](https://www.maxspect.com/media/yootheme/cache/b3/qrwechat-b3c09905.png) - 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