I am looking into getting an Octopus Extreme 160 skimmer, but am unsure if it will work in my setup. Under my tank, I have only room for something 11" wide x 25" tall. I know that all the websites say it is within these specs, but do you have to raise it in the sump any? I will have 10" of water in my sump, so should this suffice? If this is not the right skimmer, any recommendations? Thanks.