ZP you were posting here about a year ago? Welcome back. I sent a nomination to the website "where Americans can buy American" for Zoeller. Hope you guys really are keeping out of the orient.
About the m53 for septic effluent: can I hang it in the tank by a tether or does it require [as shown in the instructions] to sit upon a flat bottom or block? I would guess the block causes it to not be able to ingest anything bigger than the 1/2" cutouts in the casting? Does hanging in mid tank reduce the GPM pumped?