Thanks for the comments.
Well I guess for the sump I will fill it up with as much LR as possible, should I fill the entire 40g sump with LR? I would like the sump to target the nitros breakdown and I will have the canister filter with media to target the impurities and solids in the tank. I will keep the water flow low on the refugium and have it connect separately into the tank, unless I can find a way to connect it to the sump with low water flow. So I will make my refugium, how? Filled with sand layers, and water at the top with green plants and a light? Any input on creating the refugium would be helpful. I have a orbit 24'' CF I could use over the refuguim separately if it needs special lighting for the growth of plants.
What type of small food source animals should I put int the refug. to live in it and that will help the overall tank quality?
With this being said, sump, refug, and canister filter, you said big WC with SW is not good, what do you suggest and how frequent with this known set up? How many weeks/months and how many gallons?