We have just gotten in the new controllable Hydor Koralia 12V Pumps in. We have the new Marine Series Wavemaker 2 and the Koralia 4 controllable wavemakers. I saw these at a show in CA and thay are sweet. Take everthing that is so great about the original Koralia's, and now be able to alternate currents, controll flow, and set different flow patterns. The only downfall is that they must be run with the NEW Koralia 12V pumps and can not be run with the older models. I should have a very competative price on these to internet so before anyone buys them on-line check out the pricing please.