Hydor Koralia Nano 240 Aquarium Circulation Pump 240 GPH

Bought this for my planted 37 gallon tank to circulate a dead spot in my aquarium. This is my 1st Koralia or water circulation pump and was worried that it would blow away my fish and plants all over so I bought this under sized one instead of the Koralia Nano 425 which was rated for my tank size. I was surprised at how it circulates well for a big tank. It creates a dispersed and gentle current, unlike a powerhead that blasts a stream of water in a single direction. My fish has also perked up, they seem to like the gentle current and I often see them swimming around it. Also, it's nice to see the leaves on my plant sway with the current.

As for my dead spot, this little thing took care of it and water is clearer. I have it aimed down and towards my Fluval C4 and any detritus or fish poop is pushed towards it. The magnetic suction cup is awesome, it gives you flexibility of putting this Koralia anywhere in your tank without worrying about the suction cup wearing out. Did I mention the size of this thing? It's slightly larger than an egg but does not take up a lot of space. Others have mentioned the red ball clip that attaches to the magnetic suction cup may break, but in my experience it's a solid piece and unless you are putting a lot of force and stress on it, then yes it will break.

Recommend this product highly!

I have a 29 gal reef aquarium, and I am very happy with the amount of movement its creating , I would say perfect for my 29 gal

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If you are looking to create cross flow in a small nano (I use it on my Nano cube 12) this is perfect. I had a much larger water mover in there, and it was just too much.. This is powerful enough for small tanks and created a great flow throughout the tank when paired with the Hydor spinner on the tanks pump output.

I do not think I would use this on anything larger then a 12 or bio cube 14. If I where to have a 20 long, or even a 28 nano cube I would opt for something a little more powerful.

It is small, and not very obstructive of viewing even when placed towards the front of the tank.

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I really love this product. This is my second one. I searched for the smallest size and this is what I came up with. My fish seems to struggle with my larger one like they were in a sea storm which I really didn't like it seem to stress them out. I found this and I love it and the fish love it they can swim in calm sea's again! It's a great product just right for what I was looking for. The corals sway just enough and I'm very happy with this size and this product. I would recommend it to everyone and would purchase another. It is very quiet and super easy to install. price was also great

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I got this for my fluval edge 6 salt water reef aquarium and it is amazing! If you're looking for a mini affordable circulation pump then this is the right one. Quiet / efficient / circulates water just at the right speed.

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