Saltwater worthy Magnet

[rashr]

I am looking at getting some magnets for placing my powerheads....There are sooo many different types with different materials. Are there any that are not worthy of being in the tank? Will they corrode, will they leach deadly or malice elements into the tank? Any help would be greatly appreciated!

[inwall75]

Don't worry about the type. Just make sure it will be strong enough to hold your powerhead. Then coat it with marine epoxy so it won't be in contact with the water.