So I am looking to get a new Tunze pump to add some flow to the 450. I was planning on the 6105 but I read some good things about the Stream 3. It has a great flow rate but is intended to make a standing wave. While I love the standing wave idea I don't know how well it will work with the other powerheads in the system. Does anyone own a Stream 3 and if so what do you think?