Hi,
I have a ETSS evolution skimmer for sale. I bought this used(barely acording to the first owner) but never got to use it myself because I bought another setup and it came with it's own skimmer. So might as well part with this beast. It's rated for tanks from 100g to 300g.
Here's a link to information on this skimmer.
http://www.superskimmer.com/EVO_750.htm
And here's a fe wpicture of the actual skimmer i have.
I've put a battery besides it to give you an idea of the size of this skimmer.
It sells new for close to $500 US. I want this gone soon so make me a reasonable offer and it's yours. I'd take a few good powerheads(stong enough for a 180g tank) in exchange too. You pay the shipping cost.