Last week I had a powerhead that was near my RBTA fall off, I unplugged it and was going to put it back up after work. When I got home the RBTA had moved to the back of the tank where the PH would have been sending its water. I turned on the PH and faced it at the BTA hoping it would move. It did start to move but I think the current was to much for it and it split. On is now back in it's original position and one is in the back of the tank. Both look great and seem to be doiig well, the clowns are confused though.