My bad luck continues but you guys can learn from my mistakes.My replacement controller came in.? Since there is so much flow generated by this pump I wasn't using it over 40%.? At 60% my Xenia came unglued and rolled around in the tank and it was at least 3 feet from the pump.So I decided to swap out one set of blades and use it in the Gyre mode.? Might as well, that's what it is made for.? I was fumbling around figuring out how to change out the blades and cage.? Unfortunately my 3 year old grandson was running around screaming and distracted me for a moment.? The long cord pulled the partially assembled pump off the top of the aquarium and it hit the floor.? Nothing seemed broken so I installed it and set it to running.? Feeling the flow the pump just wasn't putting much out in one direction.? So I completely disassembled it.? The pump has a magnet rotor and the controller generates 3 phase to run the rotor around.? In an effort to keep water out of the motor the rotor uses a high dollar ceramic shaft and seal.? It's only about 1/8" in diameter which means it's also brittle.? That 3 foot drop snapped the shaft on both ends.?I bought a new rotor and a spare.? Those with 2 day shipping was a $100 hit.? There is zero flow in the tank right now.? The return pump doesn't generate much.?So frustrating.