Yep. But just a specific model, the Micron Nano, bought when I was setting up my current tank. I had seen Cory's video from a few years ago when the Micron Nano was new and it looked good, but what I received from Amazon looked different so there had been a redesign apparently. The main problem was where the holes for the suction cups were - the upper two were on the seam of the top of the motor housing which made it impossible to attach the suction cups without popping the top off; the bottom two were on the media cup that you were supposed to be able to easily detatch from the motor for cleaning, making it the OPPOSITE of 'easy to detatch'. And the slider had an open gap that a small leaf got sucked into and killed the motor. Sent it back to Amazon, they sent a replacement. Theeeennnn the replacement filter's suction cups would not hold AT ALL and the filter would hang loose and twist and turn in the back corner until I almost gave in to the desire to throw it against a wall. Amazon gave me a refund at this point.
The Shark Pro Nano, however, has no suction cups!
I was looking for a small filter that could hold some PhosGuard, too, which it can. So trying again.
You've heard of Sicce all over because they're one of the best companies; doesn't mean they can't toss an occasional lemon to an unlucky customer.
--MS