Which/How to setup refugium on 55

[ruscar]

Hello people, I hope I am at the right place. My boss has a std wally world 55 gal tank in his office. The fellow who said he would set it up did just that. Added a few rocks, a little sand, water and 3 fish. Came back a few times over the months and a few waters changes later quit coming (to far to travel). Myself not knowing anything about the saltwater world felt sad for him and the tank. I decided to take over and see if I could do anything to get it where he wanted it. Now, nine months later, have made some progress. The setup, that you see (hopefully) consist of 55 gal 48x12x20 a hob skimmer, 3 #2 koralias, and a canister filter. Lights are pc's and t-5's. Now to my questions???? 1. I believe the tank would be better off with a refuge as opposed to the canister due in part to the amount of "stuff/water" volume. I/we live in a rural area, lfs is 80 miles w/high prices. So, I buy/bought most supplies through Pet Solutions on line. Studying this sight and others I believe the Eshopps Model 100 might work? So, 2. Is this ok for what I want to do or is their another product/option I should consider. Also will need advice on what else I will need. I know a pump (what size) thinking Mag7 or Mag9.5? So from this info can/will someone help me out. ALL info much appreciated. Also be specific as I am really in the dark on this. And will show this to the boss to help persuade to loosen the purse strings! The pic's are before and now.

[75gsalt]

First ditch the Wally World tank. My seams bottom seams blew out on mine. Second, get one already drilled with overflow. Third, that sump will work but a mag drive 5 is all thats needed. Get a good skimmer and a clean up crew. I use Nassurius Snails, put all my crabs in the sump.