I bought a wp25 to replace 3 koralia 1040. Its great so far. Its the only power head I have in my 75 gallon now. I like the movement of the corals too and they seem to be happy. It did blow a bunch of my frags off my rock work though when I first started it up.
My only complaint would be the noise. It makes a whirring kind of noise as it ramps up/slows down. Makes my apartment sound like its haunted. I can see past it but it drives the missus mad.
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