It also depends on what your stock isUse a premade w/d along with 1 or 2 canisters if you want, im trying to get up the energy to get my sump set up still
I would run 2 fx5 personally just to make sure you get all the needed filtration. They are great filters I have two of them and like them allot. Then if needed add a power head or two to help move water and most important crap to the filter intake. That's the most important is getting the dirty stuff to the filter.