here are a couple pics of my current setup.
Its difficult to see, but i have 2 remora c surface skimmer boxes. one has a MJ1200 in it set up with the protien skimmer as usual, and the other has the MJ1200 running the reactor as well as the intake for the canister filter on the intake side, and the returns for both on the other side.
the stand has a divider between the two halves preventing me from filling the whole cabinet with a sump unfortunately. the dimensions i have to work with are 21" wide, 19" deep, and 17" high. that is total space where i want the sump. so it will have to be shorter than 17" to allow room to access the filter sock and the rest of the sump. i have some space on the other side to use external pumps which was my plan.
as you can see, there isnt room for the skimmer in the sump. the reactor would fit though. I would like the total height of the sump box to be 10-12 inches making the max capacity 17-20g. that will leave adequate room for access