if I do this I would probably want a custom overflow for the one I keep to maximize linear overflow length for surface skimming and to box off the corner more cleanly. Any idea who can make one or has suggestions how to? Also, as far as plugging the holes for the overflow I am removing, I am thinking I would install bulkheads with silicone, then use pvc glue to glue in a cap. Anyone ever done this or have thoughts?