Rubber coated magnets

[daddycadi]

I'm looking to make a
Frag rack. Does anyone know where to find those rubber coated magnets that don't rust or scratch glass ? My faithfully eBay has failed me surprisingly

 

[Hokies83]

Ultimate aquariums has them i think?

 

[manderx]

I've heard they can still leak. I like to bore a hole in a block of acrylic to hold the magnet then glue a piece of super thin acrylic over it.

 

[Vinny Kreyling]

http://www.kjmagnetics.com/products.asp?cat=193

 

[Chemguy85]

I saw something on one of my Facebook reef sites where a guy used a torch to bend the acrylic to make it fit on the tank then bent it the opposite direction to hold the frags. That might be an alternative to using the magnets but you wouldn't have the flexibility to move the rack up and down in the tank