Reliable, most of the time By David on 1/10/2013
David would recommend this product to a friend
I've had Koralias for about four or five years now. They're great quality, but I've noticed that they sometimes start with reverse flow when I use a timer or wavemaker. I've heard that this flaw has been corrected recently, but I haven't followed up. I purchased a pump that does this on occasion approximately 9 months ago.
Other than that, broad flow and relatively compact. Good pump!
Whisper Quiet, love it By Randal on 12/16/2012
Randal would recommend this product to a friend
The pump is not even noticeable and along with that it provides good flow to my 40 gallon breeder along with a large directional radius so I can aim it wherever i need flow. My only complaint is I wish the cable was longer.
Not what I was expecting By Michael on 11/30/2012
Michael would recommend this product to a friend
This pump is very well made and the magnets are nice. Very quite. It does not have a narrow stream of fast moving water like most power heads. Instead it has a wide area of slow moving water which might be good for certain applications. I was expecting a traditional flow pattern.
Good powerhead By Andrew on 11/29/2012
Andrew would recommend this product to a friend
This power head is quiet and has nice flow. Recommended
Great Powerheads!!! By Dan on 11/28/2012
Dan would recommend this product to a friend
I have 2 of these (425 model) in my 29g tank and they work wonders, plus i have a 1400 model in my 90g tank. definitely well worth the money you pay and thats not even a lot! :)
Good product By Sam on 11/22/2012
Sam would recommend this product to a friend
I use one 750 in a 90g tank and can point it almost right at corals with out hurting the coral at all, while still preventing detritus from building up. The draw backs are the thin slots can get clogged, wont always flow in the right direction when turing them on, and start to break down after a while (about 2 years of running). For the price though i like them a lot and are great for starting tanks.
Great Mover By Ryan on 11/5/2012
Ryan would recommend this product to a friend
purchased one of these guys (1150) to help circulate water around my rocks and it does a great job,,, Runs quiet and easy to throw into any tank.... Great Product
Worked good for a while. By Mike on 10/22/2012
Mike wouldn't recommend this product to a friend
I bought 2 of these (750 Model) a while back to try as a wavemaker setup. They worked ok for a while but then started to run in reverse at different intervals and then to the point where they would always run in reverse. With them running in reverse it has caused the round part in the screen, in front, to break away on the both of them. If I turn them off, 9 times out of ten they start in reverse. So now I just try to leave them on all the time, when I use them. I am going to replace them with another brand.
Buy it. Seriously. By fissy guy on 10/17/2012
fissy guy would recommend this product to a friend
I bought this pump (the 750 model) in March of this year. I was worried due to the cheap price that I would get cheap quality out of it. ...let me tell you, you can take it apart fully (which I have done several times for cleaning and inspecting, as I do with everything else in the tank), and it is still performing now almost 8 months later with just the same power it did on day one, and hasn't given out on me once. If it ever died, I would buy another in a heart beat.
Bottom line--- IT LASTS, and IT WORKS VERY WELL.
Over 3 years and still going By amber on 10/16/2012
amber would recommend this product to a friend
I bought 2 of these when I set up my first tank. Since then I have tried adding different brands over the years when I wanted extra flow but they all died or had issues while my original Koralias are still kicking with zero issues ever.
I take them out and bang them in the sink to remove bulid up and while I know I shouldn't, still they keep on blowing. They are silent and dont run hot which makes them perfect products.
Good product By Chase on 10/11/2012
Chase would recommend this product to a friend
Easy to install with good flow. I bought two to push water around my rock. Strong enough for LPS corals and not harsh on the fish.
Don't waste your money on suction cup pumps. By turtleghandi on 10/6/2012
turtleghandi would recommend this product to a friend
I have both the 550 and the 1050 pumps. I got them to replace some cheap suction cup pumps that kept falling down. Both are working great. They have stayed right were I put them (thanks to the included magnet) and I don't detect any stray voltage in the tank. The packaging (on Hydor's part) could be a little better. The parts were just sort of rolling around in the boxes. Its not really a problem since none of them appeared to be damaged, but it makes them seem cheap and I could see how it might result in some damage during shipping.