Thank you both for the input. Looking at the space I have, the bubble magus seems to be the better choice. I did some measuring, and I'm going to be able to fit the BM in the first chamber and not have to worry about hitting the bottom of the tank. The octopus would have to be in the pump chamber (because I suck at building sumps), and would be pretty close to touching the top.
After reading your comment, Larry, I found that cone skimmers seem to be recommended over the others. Would this one be a better choice then the original BM I linked? Bubble Magus BM-NAC3.5 Protein Skimmer - English
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