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Hydor Seltz D - Varia Flo 1600 - Controllable Aquarium Pump


Item #: HD2346

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The Hydor Seltz Varia Flow is a high-performance, multipurpose, electronic, centrifugal pump with controllable flow thanks to electronic inverter technology. Ideal for sumps, refugiums, biological filters and in general to circulate fresh and salt water. Supplied with prefilter and pipe holder connectors for non-submerged use.


  • AC controllable pump
  • 6-pole motor
  • High flow efficiency
  • 5 minute feeding timer

Spec Comparison

Model: Seltz D 1600 Seltz D 2400 Seltz D 3200
Dimensions: 7.6" x 3.5" x 4.7" 8.2" x 3.5" x 4.7" 8.2" x 3.5" x 4.7"
Max Flow Rate: 1600 gph 2400 gph 3200 gph
Max Head Pressure: 13.5` 15.1` 16`
Wattage: 60 W 75 W 90 W
Outlet Size:1.25"1.25"1.25"
Cable Length: 6` 6` 6`


  • Seltz D Pump
  • 1 x multi-diameter outlet hose connector
  • 2 x intake ring nuts
  • 1 x intake cage
  • 1 x multi-speed controller

Manufacturer information

Hydor has been producing a comprehensive range of equipment for aquariums and ponds since 1984 and offers the best in high-technology for the creation of a living ecosystem at home. The factory has developed thanks to the engineering competence of its founder and its continuous growth is based on the investment it has made in research and the development of innovative technical appliances. A competitive and dynamic structure of more than 150 employees regularly engages in the implementation of products which meet the demands of 50 nations and keep pace with the evolution of the world markets. The global quality is not a simple working method but a daily expression of mind.

5 Stars


Reviewed on
April 20, 2020

Yes, I would recommend this.

Seltz D 1600

Pros: Value / Quality

Cons: Non Yet

Wanted to spend some cash but not too much for a decent pump. I have Hydor power heads so I said 'why not!'

So far so good. Silent and a lot stronger then the pump I replaced. 55g total water and run the pump at 75% on a manifold connected to a biopellet reactor! :D

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Reviewed on
March 22, 2020

Yes, I would recommend this.

Pump is impressive and easy to install

Pros: Quiet, and easy to use and love the pause button for target feeding!

Cons: Haven't found any yet

Been running for 1 month exactly in a Waterbox 70.2 Reef.. Very quiet, compact, and easy to control.... Controller with the pause button for target feeding is what sold me originally on this product!

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Reviewed on
March 01, 2020

Yes, I would recommend this.

Amazing pump with features you need in reefing

Pros: Quietness, easy to install, and love the pause button

Cons: None so far... Very happy!

Use this 1600 in my waterbox 70.2 reef... Amazing , quiet, and love the pause feature for direct feeding! You will love this pump!

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Reviewed on
January 22, 2020

Yes, I would recommend this.

Great pump almost silent

Pros: Very quiet, good value, no vibrations

Cons: Impeller needed adjustment immediately after setup

When i first installed this pump it was making a bad knocking sound. I called marine depot and they guided me through readjusting the impeller. Since then its been great, almost silent & a great value for the price.

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Reviewed on
January 14, 2020

Yes, I would recommend this.

More than enough flow....

Pros: good price, quiet, more than enough flow.

Cons: pick up screen doesn't stay on, no wifi or bluetooth.

pump and control work awesome, and the extra fittings and seals provided allow you to use this in almost any situation.. The only reason for a 4 star rating is the pump pick up screen included with the pump will not stay on... was very aggravating during mock-up and installation. (wish it had a Bluetooth or wifi connection.)

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Reviewed on
December 14, 2019

Yes, I would recommend this.


Pros: Price point, controllable, silent

Cons: None so far

I've had this pump running for several months now. I originally purchased it to feed both my chiller and still have enough flow to power the return line. The pump is silent even when on full power. Dialed mine back from the max 1600gph for my Red Sea Reefer 350.

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Reviewed on
June 26, 2019

Yes, I would recommend this.

Best pump I have ever had

Pros: Quiet extra fittings powerful

Cons: Price

Powerful Quiet variable speed
I have been doing aquariums for many years for the Money you are hard pressed to do better

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Reviewed on
May 28, 2019

Yes, I would recommend this.



Cons: NONE

Great Pump, many mounting options. It was easy to install. I really like the Build Quality and it is a very SEXY Return PUMP.
You can mount it in or out of the water, I installed it in the SUMP.
5 minute feed mode, and QUIET!

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