The way i have it set up is the water goes down from the overflow to the sump where it is filtered through carbon or phosguard, depending on how my tank looks and the test results, and 3 different filter pads, then LR under this. My skimmer is in the same chamber as this, the skimmer pumps the water to the next chamber where my fuge is with sand and LR (no macro yet). The water then flows over a plexiglass wall ontop of a another filter pad to the last chamber where my pump is.
Sound about right?