Im contemplating setting up a 150 now that I have the room for it.My plan would be to house an officianalis or if not available a larger octopus such as Vulgaris. I have a friend that is selling a large cpr sump/skimmer. Im not sure how effective it will be nor have I ever used a wet dry system before. He is selling it for so cheap that its tempting. http://www.aquacave.com/detail.aspx?ID=1416 is a description of it. Any opinions? Typically I have just used a sump, big skimmer and fuge and have always had great success with this. Im unsure if I trust the skimmers available with this filter. Also, do you feel that the wet/dry portion is necessary? Or should I just invest in a large skimmer and throw it in a 55 gallon sump?