Reef safe magnets??

[mfbs1998]

Looking to make my own frag rack and found this in my house. Does anyone know if this is reef safe or no?

 

[1WildBill]

I would google it. Maybe see is the manufacturer can tell you.

 

[joethenathan]

I doubt those would be strong enough to hold a rack through any thickness of glass. You’re going to want “rare earth” magnets (aka neodymium). They’re super strong.

 

[joethenathan]

Oh... and even if you get the rare earth magnets, you’ll want to coat them with something to prevent their decomposition and rusting.