Thats the one I'm using right now.. works perfect.
I'd order two of tom's luft pumps.. one for backup.. they work best to start the syphon. I've caught the pump stop twice... do to old airlines.. replace the lines... and all is good.
I did a few mods on mine.. did a durso standpipe in it using 1" thin wall pvc
and also did an air trap at bottom of pipe to prevent most air from going into the sump.
Great overflow for the money! I've heard the U shape one are better than cpr like tho.. but I haven't had any problems out of mine.. minus the air line problem.
Here are some pics of it: