I am running a fuge, same concept I think, basically what I'm doing is I'm adding a second tank on the back, same profile as the display tank but half the thickness, it will work just like a hob
filter, but much larger. And where I'm putting the tank I can't have a sump below it. The sump will be 6" thick and that is where the size limit is, can't do a wet dry system, just doing carbon media, fuge, and skimmer. I will look into the other skimmer but can't find where to find its dimensions and how deep to run it.