It's something you buy when you have nothing left to upgrade :mrgreen:

...and I'm pretty sure those ones take off coralline. It's impressive.

My hagen magnets left a rust ring when I left them in the tank too, ha, well on my old tank that is.

if those things can take off coraline,then i take it back!,that is impressive...

would sound like i would really need to eat my wheaties to be able to move it around if its that strong,think i would be to scared that i would pull the glass right off!....lol.....Riot....