Hello all, Im new here. Heard about tonmo from reef central. I have been wanting an octopus for several years. I have the guts now to do a set up. I am thinking aout a 65 gal. tank. The filteration is the one thing I can not make my mind up on. I was told that a canister would be fine, but then I think about it and think that is not enough and he will get out. I have thought about a sump,but heard that they will go down into it. I am so confused. To many ideas that I begin to question. That is how I got here. People who love them. As far as the kind of octopus, a mimic is what I would like. Is a skimmer required? I really need help. Hope everyone is ready for alot of questions. Thanks.