Well, it's not the best skimmer out there, but it is the most economical one. It doesn't use very much electricity, works well, and does not cost as much as most. The SeaClone 100 can have adjustments made to it that make it a very efficient skimmer, and I did these adjustments, and it works great now. The website for these adjustments is <a href="http://www.reefcentral.com/diy/seaclone_modifications.htm" target="_blank">SeaClone Modifications</a>. I use it in my sump for my 75, and it can be used as an in-sump or hang-on skimmer. I think that the price range is around $100, but I'm not that sure. HTH