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Ships within 48 hours · Estimated delivery Jul 19 - Jul 24
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Description
Maxspect Jump Gyre Flow Pump MJ-GF4KSuperior Cross Flow Technology Explained Comparing to traditional powerheads and wavemakers, based on propeller nozzle technology, our latest gyre generator is based on crossflow technology. Cross Flow Technology Virtually no dead spots. Evenly distributed flow rate throughout the entire aquarium. Water bounces back from the other side to create a full circulation. ie. generating "gyre flows". Model MJ GF2K MJ GF4K Dimension L223 x W72 x H38mm L8. 78
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.
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".
| 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 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
Thanks Jeeves!
Size: 11, Color: Raven/Quiet Shade/Ivory
They look and fit very nice! Perfect for around the mansion or the yacht club lol.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
★★★★★ 4
Poor footbed but otherwise good.
Size: 10, Color: British Tan/Dark Chocolate/Natural
Comfortable. Replaced mediocre footbed that has no arch support with something else and it is now great. True to size.
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Reviewed in the United States on April 16, 2026
★★★★★ 5
A notebook that stands up extremely well to bad weather and harsh working conditions
Color: Tan, Size: 1 Pack
Now that I've used this notebook, I can't see myself using any other kind. I travel a lot and need a notebook with me at all times. That means the notebook I have with me is going to get wet frequently and take a beating in my pocket. This notebook is perfect. Rain/sweat have no effect on my written notes or my ability to write. The pages are thick which prevents tearing. The cover and binding are quite sturdy, rather than getting bent like cheaper notebooks. At 4x6 inches this fits in my cargo pocket without a problem and gives me plenty of writing space. If you are going to carry the notebook in your front pocket I'd suggest the smaller 3x5 version. The ruler on the back page was not something I thought about but has come in handy several times.
No, this is certainly not the cheapest notebook available, but it is a reasonable price for a high quality product. If you are using this for field work, it is probably worth the cost. My work notes are certainly more valuable to me than the couple extra bucks spent. And really, how often do you fill up a notebook? I only go through one every month or two so it's not very costly.
You cannot use gel type pens with this notebook, only normal ballpoint pens or pencils. I suggest using a Fisher Space Pen, it works very well with this notebook (also available on Amazon Prime for under $10)
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Reviewed in the United States on May 31, 2016
★★★★★ 5
Wet proof is great
Color: Blue, Size: 6 Pack
As a nurse, I am able to put this in my scrub pocket and make notes as I go along. I also write down my patients' meds so I can refer to it when the computer is not available or not with me. Since it is wet proof I can sanitize it when (and not if) it gets something on it. I use a ballpoint pen and have used a pencil and none of my writing gets smeared or erased by the disinfectant wipes. Since I have these books stored securely in my locker if something comes up in the future with someone I can refer back to them for answers not found in the chart. I use my book when I am giving shift report which is very helpful when I have to tell the know-it-all nurse every little detail because she wants to eat breakfast instead of reading orders and notes. Some of my coworkers have also ordered their own books. A great product and very durable.
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Reviewed in the United States on June 30, 2020
★★★★★ 5
Great product
Color: Black, Size: 3 Pack
Great for taking notes. Write anywhere
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026
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