Reef Safe Magnets

[lilgrounchuck]

I’ve got a bunch of these left over from something else and I’m just curious if anyone has used them? I need to make a frag rack and I’d like to use them since I’ve already got about 20.

https://www.lowes.com/pd/Hillman-3-4-in-Ceramic-Disc-Magnet/3115767

 

[Retro Reefer]

They would need to be incapsulated with something like epoxy before I would use them in my tank.

 

[luke fortunato]

Same, be careful they may be toxic once they degrade- saltwater is more corrosive then fresh

 

[mfinn]

ceramic magnets are safe in saltwater.
I have several I've been using for 20+ years in saltwater.

 

[lilgrounchuck]

Awesome, thanks. Digging around it seems folks have used them without issues. Maybe I’ll cover them in plastidip or just encase the whole thing with super glue when I attach them just to be safe.

 

[samnaz]

ceramic magnets are safe in saltwater.
I have several I've been using for 20+ years in saltwater.

They are?!? I had no idea. Thought for sure they weren't safe. Never heard/seen anyone use ceramic magnets (is that just because they're not strong enough for anything?). I only ever see Neodymium encased in epoxy/plastic/etc.

 

[James.gridley]

They are?!? I had no idea. Thought for sure they weren't safe. Never heard/seen anyone use ceramic magnets (is that just because they're not strong enough for anything?). I only ever see Neodymium encased in epoxy/plastic/etc.

Yeah, they aren't nearly as strong as Neos, and they are larger.