I lied, I was talking about the Via Aqua 180.
http://www.graystonecreations.com/images/va180.jpg
I have this in a 2G hex, and it's silent, but it does take up quite a bit of room, and I am planning on using a Red Sea HOB after Thanksgiving. But I really like this one - I have one in a couple salty nano tanks, as well las the hex and they work well.