Are these Neodymium magnets reef safe?

[Subnautica]

I have lots of these but not sure if they are safe to use in the water. I'm making a DIY coral rack and wanted to use these magnets to hold the rack on the glass.

 

[wisnia99]

I have used those. You can't have any metal exposed to water.
Kjmagnetic

 

[mfinn]

No those are not reef safe.
They will be ok on the outside of the tank.
But I have found that they will start to rust and corrode even on the outside.

 

[chicago]

are any of you do this for lets say 1" glass .. I have been looking and looking

 

[brandon429]

Buy from the kj magnetics site linked above, large plastic coated will work on one inch glass