[mcrist]

I am curious how the wetside stay attached when the magnet expanded as much as it did. When one of my magnet’s casing cracked, it stopped working immediately.

I have both Tunze and Vortech in my tank and they are completely different technologies. I am not surprised that this this never occurred on the Tunze. I have never had a magnet on an impeller fail on any pump. Shaft breaking, yes, but not the magnet.