Randy Holmes-Farley
Reef Chemist
View Badges
Staff member
Super Moderator
Ultimate Member
Excellence Award
R2R App User
Expert Contributor
Article Contributor
R2R Research
My Tank Thread
The magnetic power is not strong enough... however, aeration floatation separation has been in practice with the utilization of electromagnets producing a Gaussian field that is able to extract heavy metals.
http://www.mastermagnets.com/product/electro-magnetic-filters/
The link you give removes magnetic particles using a magnet. We don't generally have magnetic particles in reef tank water. :)