Hammerhead/Barracuda Hybrid 6000/4590 GPH External Pump

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This item ships directly from Reeflo.

Why does BRS recommend this?

When it comes to high-flow/high-head pressure needs the Reeflo pumps are the way to go.  With two different impellers their value is that much greater.  Reeflo is by far one of the most sought after pumps for commercial systems, because they last a long time, built well, and they are quiet.  They are not the smallest pump on the market but if you have the room they are the way to go.

Energy efficient, quiet and cool operation with maximum durability. Hybrid model includes kit to easily switch between Barracuda and Hammerhead pumps thus allowing you to dramatically change flow rate and power consumption to best meet the needs of your aquarium set up.

  • Max Flow: Barracuda 4590 GPH
  • Max Flow: Hammerhead 6000 GPH
  • Max Head: 23 Ft
  • 1.5 ” Inlet/ Outlet
  • Maximum Wattage:253/355W
  • 3 year warranty


ReeFlo pumps are hands down the best high flow/high pressure pumps on the market. They are the most affordable, lowest wattage, and quietest pumps in this class. ReeFlo also provides top notch customer service. We have, along with our customers, personally found ReeFlo to be extremely helpful with questions and troubleshooting.


  • Max Flow: Barracuda 4590 GPH
  • Max Flow: Hammerhead 6000 GPH
  • Max Head: 23 Ft
  • Dimensions: 16.6" L x 9.6" W x 9.13" H
  • Input: 1 ½” FNPT
  • Output: 1 ½” FNPT
  • Maximum Wattage:253/355W
  • Average Wattage: 237/337W


Quick Compare - ReeFlo External Pumps

Model Maximum Flow RateMaximum Head PressureAverage Draw
Snapper/Dart Hybrid 2600/3600 GPH 12 Ft 94/165 Watts 2” FPT inlet/1.5” FPT outlet
Super Dart/Snapper Gold Hybrid  2400/4300 GPH 14 Ft 147 Watts 2" FPT inlet/1.5" FPT outlet
Barracuda/Hammerhead Hybrid 4590/6000 GPH 23 Ft 237/337 Watts 1.5” FPT inlet/outlet
Hammerhead/Barracuda Gold Hybrid 4300/6000 24 Ft 237/372 Watts 1.5" FPT inlet/outlet
Manta Ray 5040 GPH 55 Ft 771 Watts 1.5” FPT inlet/outlet
Tiger Shark 8500 GPH 55 Ft 1065 Watts 1.5” FPT inlet/outlet
More Information
Input Size 1.5" (1-1/2 in.)
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Product Questions

What is the horsepower on this pump?
Question by: Isabella on Jan 18, 2023, 8:48 AM
Hey There, thanks for the question! I do not know the exact horsepower. You might be able to calculate it using Maximum Wattage:253/355W otherwise I would contact reeflo directly!
Answer by: James Johnson (BRS Staff) on Feb 8, 2023, 5:38 PM
Which impeller wheel ships inside the pump housing? The 6000gph or the 4590gph?
Question by: Thomas on Sep 12, 2020, 10:09 AM
The larger impeller is the one installed.
Answer by: Matt Lucero (BRS Staff) on Nov 5, 2021, 9:53 AM
Putting together a 250 rectangle tank with three return heads to the tank. The distance that I have to go is just through the wall of my house maybe 6 feet total. Will this be too much for the fish and won't a valve allow me to take it down?
Question by: Doug on Nov 21, 2016, 11:32 PM
Great question! I would say that this pump will be far too much flow for your 250gal tank. Typically we recommend 8-10x turnover rate, in which case you should be looking at a pump that is more in the 3000min-4000max GPH range. :-)
Answer by: Admin on Nov 22, 2016, 5:27 PM
Setting up my first saltwater tank looking at 48 inch 120 gal. on the main floor. 36 gal sump in the basement, head pressure will be about 15 ft. Need help with GPM. This ReeFlo Barracuda/Hammerhead Hybrid sounds like the right pump. Is this over kill? If so what GPM should I be looking at? Starting as a FOWLR then looking for some corals.
Question by: Curtis on Apr 5, 2014, 5:59 PM
Hey Curtis,
Below is a link to the head pressure chart. It sounds like this is likely your best bet but the GPH will vary depending on what impeller you have in. With the Barracuda impeller in @ 15ft of head pressure you can expect around 2400gph or so which should be plenty good. If its a bit much you can always turn it down a tad but as a whole, for a pump capable of pumping that type of head pressure pretty good choice.
Answer by: Bulk Reef Supply on Apr 5, 2014, 5:59 PM
Is the ReeFlo Barracuda/Hammerhead Hybrid 6000/4590GPH pump submersible (in-sump) or not-submersible (external) or both?
Question by: Shawn on Jan 1, 2014, 4:24 AM
Hi Shawn,
All of the Reeflo pumps are external pumps, they are not submersible.
Answer by: Bulk Reef Supply on Jan 1, 2014, 4:24 AM