Ok guys, I finally broke down and bought a TUNZE 6100 for my 120gal. I was using a SWCD and I "thought" it was doing an ok job. Well, let me tell ya, the difference is like from night and day. WOW. I mean seriously people, this thing is simply amazing! The power behind it, the beautiful currents I get, I have a piece of the ocean, current and all! I can not say enough. The corals have opened up so much more, it just amazes me. My mushrooms are having some trouble adjusting, but already, just after 24 hours, they are relaxing. I am going to have my daughter use her camera and make a small video and post a link on here, as soon as I can get her here long enough to do so. This thing has cleared nearly all the debris from the sand, and it has also gotten the junk that builds up on the side of the glass from a deep sand bed! I believe that this tunze is going to not only keep healther corals by the ocean simulation, but it is also going to help keep my aquarium cleaner and clearer by keeping any debris stured up so that the filter can get it. Can you tell I can't say enough great things? LOL. I will post as soon as I get a video of this.