Hi all, I'm ready to buy all the equipment I will need other than my tank to set it up and start cycling for 3 months before I actually get my octopus. I'm looking at buying a sump, protein skimmer and filter first, and then water and live-rock and whatever else I will use for cycling. I would like to check the models of equipment I was going to buy to check they would work well for an octopus in a 56 gallon tank. I have noticed there seem to be some all in one units which are attractive to me, but are these sufficient alone for an octopus? Some of the sumps/filters I am looking at buying: Proclear Aquatics Slim Line 60 Wet Dry Filter With Prefilter Berliner WD-125 Wet/Dry Filter Eshopps Wet/Dry filter If A separate filter is needed I was looking at the Eheim Ecco Comfort filter If a separate Protein Skimmer is needed, I was looking at the following: Berlin X2 Turbo Protein Skimmer Aqua C Urchin in sump Protein Skimmer There seems to be some pretty big price discrepancies and I don't want to buy something very expensive if I don't need it. Based on what I have been reading I would think the Proclear or Berliner filter/sump and the cheaper AquaC in sump skinner would be fine. What are peoples recommendations? Are there better options than what I have considered?