Just hooked mine up yesterday. I like it enough but upon searching info I was under the impression I would be replacing my current 6 PHeads in the tank for this 1 pump. Not going to happen. It rocks a wave but im a flow guy and have it now running with all the others and feel I now have around the flow that I need. Let's just say its not as crazy as I was expecting. As far as pattern goes-I like how there is more of a bounce and bob pattern with corals now rather than a blown over effect. Waves go back and forth it seems and its objects in the reef that seem to give them their random flow. Still have a lot of playing around with it tho so we will see.