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by james
on 4/24/2013
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Purchased 2 of these to replace dead #4's on my 180. they are not dead silent. they click on start up. Both of them. However they do produce better flow than the old #4's and are now 1500gph pumps. Would have rated this higher if i didnt read all the Hype they were Silent (they arent). The magnet improvements were def. not needed and seem to have less ability than my old ones. I had to superglue the head to the magnet base on both as they would fall off... and crashed into my 16" monti... Price for performance is good enough though.
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by dru
on 3/12/2011
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I have two 1400 pumps on each side of a 48 inch long , 55 gallon tank,connected to a natural wave timer. You would think that the volume of water that this represents would totally overwhelm the corals and fish , but they thrive in the powerful but diffused current. It is absolutely silent, dependable, and makes the on/ off switching with out protest. The magnetic attachment is especially appreciated, given my prior experience with hang on hooks and terrible suction cups.
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by Hoang
on 2/7/2011
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These power-heads are the best bang for your buck. I run 3 of these on my 120g and their great! I get flow in every direction with no dead stops. My tangs love to surf in the current created by these power-head. Their also every quite, I run 3 and I hear nothing. Not a single hummmm.
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by binford 4000
on 5/22/2010
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changed out our old koralias with these new evolution.The flow is strong yet not overpowering and they can be used with a wave maker or control.The flow reminds us allot of an MP40 without the price tag. Great job hydor!!
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