Korallia question

[~reefchik~]

That suction cup magnet thing that stays on the outside of the tank.  I thought it would hold the Korallia in place, but mine fell off yesterday and when I went to replace it, it doesn't seem to stick.  I would have sworn it was magnetized and it does look like a shallow suction cup, too. 

So what's it's function?  The Korallia itself is working fine, btw.  I wish it pushed more water but I'm moving it around a little to see where it does the best job and still remains somewhat out of sight. 

[TechGuy]

They are magnetized! Which pump is it, some aren't made for thick glass.

[Kenn]

  It fell off ?!?


WOW ... you almost have to take a pry bar to mine to get them off the tank.

[~reefchik~]

I think it's a #2.  Maybe it fell off because it was also behind the plastic background.  I moved it to the glass and now it sticks ok.