So i went and bought one of these for myself for now, I really want one of Olivers sweet pumps, but too much $ now.
This thing is pretty rocking, sure moves a lot of water. Has 3 different wave modes and half a dozen non wave modes plus a speed control. On the 1 wave mode I have around 1.5" - 2" waves running down most of my 10' tank!
Not sure I would want it in a room I was sleeping in but in my office i can't really hear it.
Highly recommend if anyone is looking to add a bunch of natural flow to their tanks. They've got a bunch of different sizes too.