Hydor Koralia Nano Aquarium Circulation Pump

By Hydor
Rated 5 out of 5 stars


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$36.99Chewy Price
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Fish TypeMarine Fish, Tropical FreshwaterMarine Fish, Tropical FreshwaterMarine FishMarine Fish
Aquarium TypeSaltwater, FreshwaterSaltwater, FreshwaterFreshwaterSaltwaterSaltwater

About This Item


  • Compact, energy-saving pump is ideal for nano reef
  • Recreates natural water motion, equipped with a ball joint that lets you adjust the flow direction
  • Patented magnetic suction cup to securely attach to side of the tank
  • Compatible with the Smartwave controller
  • Built-in fish net and anti-vibration system won't disturb fish or other inhabitants

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Questions & Answers

3 Customer Questions

Will this work on a 45 gallon saltwater tank or should I get a higher size
Answer by ChewyAug 14, 2017
The 240 GPH model has a Wattage of 3.5 W, dimensions of 3.5 x 2 x 2 inches and is intended for freshwater tanks of 16-28 gallons or saltwater tanks of 10-15 gallons. The 425 GPH model has a Wattage of 3.5 W, dimensions of 3.5 x 2 x 2 inches and is intended for freshwater tanks of 28-50 gallons or saltwater tanks of 15-30 gallons.

Does this pump require a controller and if not, does it come with the power supply?
Answer by ChewyJun 23, 2018
This product does not need to be connected to a Hydor Smart Wave Aquarium Pump Controller, but it can be used for added control. It connects to an electrical supply with a two prong adapter.

Would the 425 be ok on a 10 gallon FOWLR tank?
Answer by ChewyNov 14, 2022
The 425 pump is suitable for 28-50 gallon freshwater tanks.

ReviewsWrite a Review

Rated 5 out of 5 stars
7 Ratings
Would recommend to a friend

7 Customer Reviews

Rated 5 out of 5 stars
By apeflames on Apr 12, 2023

Good little wavemaker

I got the Nano 425 for my 55 gallon tank. It works perfect. Strong enough for surface agitation yet gentle enough it doesn't blow my fish all over the tank.

Rated 5 out of 5 stars
By Rene on Aug 28, 2018

Great powerhead, blasts my tetras around

I don't know how I figured 240 gph would be OK in my 20g long, but I did. I had to move it from where I had wanted it as it was so powerful it was sucking in all the bubbles from an air stone 8 inches away. First day I had it on, my fish went nuts in a good way. My corys were scuttling and drifting along their sandbed, my danios were chasing each other through the current, and my littlest tetras took turns darting directly into the jet only to be blasted into the opposing tank wall. I turn it on intermittently, and I can't leave it unattended in good conscience for my tetras sake, but I have it positioned on the back wall next to the outflow of my filter and pointed up at the water surface, and it makes my tank water go in circles. It doesn't stay put at the edges of how far it can be adjusted, but I've had more issues getting the suction cup magnets to detach when I need to move/clean it. I want to buy a powerhead better suited to my tank size but this one is so quiet and Koralia doesn't make anything smaller, so I'm happily resigned with blasting my tetras around now and again.

Rated 5 out of 5 stars
By Tim6 on Jun 13, 2018

Great Buy would definitely recommend

I ordered this pump for my 30 gallon reef tank it works perfect

Rated 5 out of 5 stars
By Mike on Feb 3, 2018

Silent and powerful

No more noisy Aquarium Air Pump and bubbles noise for me.The 240 gph oxygenator is good enough for my 120 gallons tank.

Rated 5 out of 5 stars
By Macy on Nov 19, 2017

I bought this for my 12 gallon flat back hex

It moves alot of water with out making a sand storm

Rated 5 out of 5 stars
By Vanessa on Sep 6, 2017

Great for planted aquarium

I put this in my 29 gallon planted tank on the opposite end of my canister filter output to circulate my water.. love it!

Rated 5 out of 5 stars
By Whataday25 on Feb 2, 2017

Does the Job

I have a small 30 gallon Nano reef tank and needed more surface stimulation so I purchase two hydro pumps with a controller and,..." The get the Job done"