Still in limbo of what to do with the sump/fuge. Leaning towards using my 55 as a sump and my current 20 high as my fuge. To provide some more info on my setup, the 220 gallon has two overflows each with two holes drilled on the bottom (assume one for the reutrn and one for the overflow to the sump for each column), is this correct? I need a little help on what to do with this setup. The problem is its not in my budget to get a bigger sump/fuge, I would like to utilize what I already have. As for lighting, I'm set on (3) value fixtures from reefbreeders. The construction for the "in-wall" will start this weekend.