Fishdoc, the stream does have the controller hooked up and it alternates from 30% to 100% every 10 seconds I believe. I like it alot, I am a huge Tunze fan. Everything is so modular, and replaceable for not much money. Its alot of money up front, but then you have pumps that last really forever as long as you are willing to maintanence parts that go out. German engineering what can you say. I would love to have two of them and the new multicontroller that does wave, luner, etc.
jwf60 all of the corals are from small frags, with the exception of the pink pocipilpora(sp). It was fishdocs, and I bought it large.