Post from Oct 3, 2017: This particular model has an always on switch if the motion sensor begins to bother me. While waiting on my rock to dechlorinate, I thought of trying the skimmer pump from my Red Sea skimmer on my EuroReef body. I used a 1-1/4" PVC elbow to a 3/4" reducer bushing to get everything to mate up. There was still a small gap between the 1-1/4" end and the o-rings on the pump. Luckily I had a length of thin walled PVC that filled the gap perfectly. I cut a short length and used it as a shim. While it seems to work, it's a little underwhelming. I had to adjust the overflow more than half way up just to get bubbles in the neck of the skimmer body. This was a fun experiment, but I'll just have to wait to get a "new" skimmer.