When I got my 265 I am currently repairing a couple weeks ago it came with 2 fx5s. I am almost done finishing my tank so Im trying to put one of my fx5s in my rbp tank to get some bacteria started so I can get the new tank cycled faster. The filter is primed and starts pumping for a couple minutes just fine then turns off. I have checked the impeller for sand and cant find any. Do any of you know what could be causing the stoppage? I have never had one before so dont really know where to start. I can unplug it and plug it back in and it will start right back up which doesn't make sense.