During Friday's MACNA event, I saw a cool bracket during one of the presentations. I'm not sure if it was Terrace or the cool, reef doctor. Basically, it slipped over the output stem of the PMUP and stuck out an inch or so with a hole to mount an optical sensor. So you could mount your low water sensor right on the PMUP to trigger the shut off.
Does anyone know what I'm talking about? I don't suppose anyone has an STL file for that bracket, do they?