I was bored so I drew a pic, lol. We used to do these as commercial setups at doctors offices, etc. We'd set them up as peninsula style tanks. I'm not sure how the second hole is arranged at the one end, but we used to use those as a wire chase up through to a canopy so it could free stand away from a wall so you wouldn't see plumbing or wires. We'd run it right up through the overflow column. Or you could use as an emergency overflow, second return, etc.How about column style weir on one end and build decor around it to conceal. Use the other one as a return with a check valve in the line to prevent backflow.

