I copy and pasted this out of my other thread but here's the low down on the tank I'm planning on setting up. I was really liking the reviews I heard on the ATI bubblemaster skimmers and was thinking about going with the 200 but they seem to be having issues getting things shipped overseas. In sump or external is fine with me either way. Not 100% sure on the tank yet. It will either be a 50 gal. breeder 36x18x18 or it will be a custom made tank that's 36x24x20" tall. The price of the custom tank is all that's really holding me back. I plan on having a pretty big sump setup. This is kind of what I was planning on as of right now. 1. Water will overflow from the tank and go to the basement 2. water will enter a 29 gal tank with a filter sock on it. Tthis tank will also have a hole drilled in the bottom of it with a ball valve and will serve as my water change tank. Just turn the ballvalve to empty and fill back up. 3. after the 29 gal tank the water will flow into another tank (not sure what size yet, prob. either a 75 gal. or 125 depending on what I can find at the time) where the first chamber will hold the skimmer. 4. after the skimmer chamber it will flow into the refugium portion of the sump, I want this to be as large as possible. I plan on having cheato in it as well as mangroves 5. then back to the return area where there will be an auto top off of some kind. 6. After things start growing out I also plan on hooking up a 50 gal. stock tank for a frag tank similar to what waverz has setup.