Waterproof magnet sources?

[shiftline]

What do you guys use for waterproof magents in diy projects ?

 

[Triggreef]

The best ones are from https://octoaquatics.com
But they are not cheap. They are the best and strongest though, and encased in acrylic so easy to glue onto acrylic

 

[bmbpka]

https://www.kjmagnetics.com/products.asp?cat=164

Rubber Coated neodymium magnets from KJ Magnets. Lots of shapes and sizes

 

[Billdogg]

My go-to is KJ as well. They have more magnets of different sizes and strengths than I ever would have guessed possible.

 

[Macdaddynick1]

How many LBs of force do I need for a frag rack that would hold on a 1/2” glass?