That's unfortunite Marick. But, on a good note. When that FX5 takes a crap on you, you still have the option of walking out to the picnic table, blow of the leaves, take them in and hook them up. Your back in business.
One is in need of a couple of parts, Latches, O ring, Hoses. Other needs an O Ring. But if the FX5 takes a crap I'll grab one of my spare FX5s. I doubt I'll run an Eheim after the one Pro II decided to dump water all over the place. Then the second fell apart as I was latching the motor down.
Might be user error, Might not be. But the FX5 hooked up and worked flawless since I got it.
Mike