a sump is a sump is a sump...very easy to make one out of a cheep aquarium. Take a look at some online and go from there. All you need is some plexy glass or glass for baffles to get rid of the micro bubbles coming back into your system, and you could always add a refuge to it, here is a pic of...
Are you looking for a 'Previously Owned' Model because price is an issue? if it is I have the Jebo 520 79$ on ebay! on my 90 and its doing great. here is a pic.
http://www.reefgossip.com/public_html/album_page.php?pic_id=7
In sump.
http://www.reefgossip.com/public_html/album_page.php?pic_id=93
