I know the micro bubble issue has been discussed numerous times but I am wondering if anyone has ever had their filter stop working or shut off because of them? I cleaned my filter about 1.5 weeks ago and while doing so I changed up the media setup. I put all new sponge pads around the outer rings. I have 3 small bags of Purigen in the top tray, the ceramic cylinders in the filter, and in the bottle I added 2 blue filter pads and 1 white pad. everything was good for about a week and then I started seeing the micro bubbles. After researching this issue I assume the problem is the filter pads I added to the bottom tray but I did not have time to mess with the filter until this weekend. The flow still seemed good, and the bubbles don't hurt anything in the tank so I just let it run. This morning I do a quick check on the tank before leaving for work and I notice there are just a few slow bubbles dribbling out of the pipe and there is no water flow at all. I unplugged the Fx5 to prevent any damage but Im wondering if anyone has had this issue with the flow stoppage?