Got yesterday and equal eingbaut the device. Works well - to hear, unfortunately, the same distinctive hum. Fortunately, the pool is in the living room and not in the bedroom, then I would have the part sent back the same. Probably you have to get used to it. Previously had a significantly larger external filter - which was a lot quieter. To mount with magnets: I find not so stable, indeed holds, but if you just tighten a little bit on the cable, it slipped or dissolves. Now I like the good old sucker. Too bad. Otherwise: Delivery well, handling well, star deduction for the volume.
