Are ceramic magnets reefsafe?

[reefer4eva]

As some may know I do a lot of unique aquascapes and I was wondering if ceramic magnets are reefsafe and if there not what magnets are reefsafe?

 

[reefer4eva]

I'm assuming they are being that most pumps have ceramic shafts to make them operate...correct me if I'm wrong?

 

[STHILL]

I was thinking about this a few weeks ago, i got rare earth magnets on ebay i sprayed them with plasti dip spray let them dry for 2 days and put them in my tank at work so far 3 weeks in tank no parameters have changed...

I may also try coating them with a marine grade epoxy next..