Ok, so, I began with my FX5 fine, but after the first month, it started to squirt microbubbles, so I cleaned it, and changed some of my media out. Then the same thing happened two weeks later. So, again I did the same thing.... Long story short, now, no matter what I do, the damn thing shoots out micro bubbles and makes an awful "full of air" noise. I shake it before I plug it in, I even took out an entire tray of media to see if that would make a difference. Any thoughts?