I just bought them this past week and set up on my IM 30L (3ft×11"x13"). Bought 2 of the 660s at first, a little under powered. So I returned 1 of em and got the next step up, around 1000 gph. Much better set up. Can set them up individal or linked. Like that you can control wave power and frequency on each one. Linked they have to be on the same settings.
Both pretty quiet, can only hear at full power and up close to em. The 1000 gph is about the size of your wp10. 660 even smaller.
Only been a week but lovin em. Have the 1000gph set to surge 70% to 0% to 70% over about a 60 second time frame. Have the 660 on oposite end same power, but over a 90 second time. Makes for a good random flow.
For about $200 for 2 pumps, hub, controller very happy with it. Can connect 3 pumps to 1 hub. Only down side is all the wires.
