What's the best magnet cleaner for a 225?

[Lilgrasshopper]

What's the best magnet cleaner that floats and is extremely strong, able to clean a 225 gallon tank with 3/4" thickness? I need it float so I can do the sides without having the magnet sink. Also where can I get one of these treasures? Thanks for your help.

[newkie]

I just got an AlgaeFree Hammerhead float magnet. You may go for the next model up which also floats, which is on sale for $110 direct from the manufacturer. It works very well, its a bit stronger than the less expensive Tunze 220.54 which I previously used. Its still hard to get coralline off, but I think most magnets have a problem with that unless you go over that spot many times. My only complaint is that its a bit harder to grip/not as ergonimic than the Tunze. But the outside piece is a nice finished piece of wood which looks well if you keep your magnets in the tank. HTH