here is somthing I set up. It was 5 10gal tanks I was going to use as a frag set up. Nothing special but I am sure you will get the idea.
Tanks on the floor so I could make a table to set them on
after I made the table and they were up and running
here is the sump nothing fancy just all the tanks drained into it
with a return pump in the middle
here is the return plumbing in the middle