Hydor Koralia Nano 425 Aquarium Circulation Pump 425 GPH

This works very well for my 37 Gallon. It really is quite and creates just enough circulation in my aquarium to keep the water moving nicely. I wouldn't say it does an excellent job eliminating all the "dead spots" in the tank but the fish seem much happier and my feather duster looks so nice flowing in the current.

The size is perfect for small aquariums and hides nicely next to my filter so it really isn't obtrusive.

I am considering getting a second one just to increase the flow and rid the tank of all dead spots.. I haven't decided yet but I love the product and this was the best price I found it for :)

I have to say that this circulation pump is amazing. Packs a lot of punch for something the size of an egg, and it's small size is what makes it so great. With the magnet base to attach it you can basically mount this thing anywhere in the aquarium. I originally bought it to add to my AquaClear Powerhead 400 for some extra flow but I was so happy with the performance, size, and neat clean look inside the tank that I have decided to retire my old bulky powerhead and replace it by ordering another Koralia Nano 425. I have a 29 gallon BioCube and I believe 2 of them will give the perfect amount of flow for my corals. Very happy with this product and I highly reccomend it.

Buy Hydor Koralia Nano 425 Aquarium Circulation Pump 425 GPH Now

This unit moves a lot of water in a broad, gentle path. The magnetic base works well; the unit is easy to reposition. The cord isn't bulky and is plenty long. The design is low-profile and much more attractive than your average power-head. So far no "suck-in" fatalities with my inverts I've even observed snails crawling over the housing without any apparent problem. Not as fully adjustable as I had hoped to achieve the optimum direction, but once set it stays put.

Read Best Reviews of Hydor Koralia Nano 425 Aquarium Circulation Pump 425 GPH Here

This pump is VERY quiet, you actually have to see the water moving to know it's running. I also have the larger sizes but this one is great for smaller spaces. The magnet suction cup is great and secure. It is not fully adjustable as far as the angles you can aim it, but has a decent range of motion. If you are debating between this and the 240GPH, go for this one as it is not as much movement as you'd think.

Want Hydor Koralia Nano 425 Aquarium Circulation Pump 425 GPH Discount?

I purchased this power head for my 10 gallon nano-reef. I was kinda afraid that it might have been to strong of a flow, but after about 2 min after i installed it, my clown and my chromi where playing in the stream. it has been the best investment to date aside from my lights. it makes feeding a breeze, it circulates the food, keeping it from falling to the sand bottom and giving the fish ample amounts of time to eat. i also use it when i dose my tank with PH buffer, i pour the PH buffer over the top of the power head and it circulates it through the tank. so anyone with a 10 gallon, don't hesitate to buy this.

Save 25% Off