Glenn,
One of my wheels was bad on my ER skimmer and used the sicce pump for around two weeks. It was a big improvement from the Hydor. It didn't do that Hydor stutter when turned back on after feeding so alot more confidence in reliability. The heat was less also. Not as cool as the ER but it closed the gap for sure. The pump has 20w on the label as the hydor had 50w i think. That would explain that. The problem with it is the noise. all impeller vibration. All I will say is I was told to get rid of the noise or the tank. Thats how bad it was. I only had one pump, thats the one RS sent me and all this based on that pump.
I would think u would have a shot at keeping it stock. just have no idea how u will deal with the noise of 3 sicce pumps.
IMHO, Go see one running before buying.
Good luck,
-JOHN