I went to Frank's Tanks last night. Marc was there and he and Bo (Frank's son) were tinkering with the new Vortechs and controller on the BIG tank. They were able to set them where there were actual waves going back and forth. I mean real waves. You could see them rolling back and forth on top and watching the corals etc. in the tank I have to say it was the most natural looking movement I've seen inside a tank. I was amazed.