I do agree with the drawback of the mounting. It is geared toward the rimless / or eurobraced tanks that don't have plastic moulding pieces.

I ended up ditching the mounting hardware and epoxy'd the black mounting tracks to some extra magnets I had. Works perfectly and allows me to easily move.

I give the unit two thumbs up also, no issues thus far. Setup and going for three+ months. I'm about to add a Kalk Reactor in line with it, so I hope the pump can handle it.