I’m looking at adding a Protein Skimmer to my sumpless 40B. I’m leaning towards the Tunze 9004DC because of the surface skimmer feature and I’m curious about your thoughts? I’m a little hesitant to get a HOB skimmer, but if I did the Aquamaxx 1.5 would probably be it. Any thoughts or opinions on either model or a different one? I can’t convert to a sump unless I move the tank and I’m not there quite yet.