Yes they can run externally, which is what I plan to do. Just need to get my hands on a 1.25 to 1 inch pvc adapter fitting for the inlet. The outlet is already 1 inch.Cool. Let me know what it would be if under the 24.
I need to double check sizing and see if it would fit in my really small return compartment of my sump.
I think I remember reading that these can be run externally also can anyone confirm or deny that?