Do magnets rust?

euphoricgear · 10/10/2018, 12:40 AM

Hey guys, just wanted to know if anyone has ever glued magnets on their frag plugs or rocks and placed them on the glass. Which magnets did you use and did you ever noticed it they rusted? Are there "safe" magnets for salt water or any would work?

https://www.amazon.com/ETO-MAGNETIC-...A2DFG8UZH4NS8K

Found this on the decription:
LOOK GREAT ON ANY SURFACE - Made from Brushed nickel silver finishing material, these stainless steel magnets for refrigerator are specially designed to look ultra-attractive on your fridge, washing machine, dashboard etc.

Any info would help.
Thanks

Subpilot · 10/10/2018, 01:04 AM

Bare magnets rust big time (including Neodymium). Most Neodymium magnets come with a nickle plating that makes them corrosion resistant. That said I think your best bet is to add an extra layer of protection and cover them with epoxy. If you heat the epoxy just after you apply it it will become very low viscosity and can make a light coating that wont reduce the magnets strength too much.

dodgerblew · 10/10/2018, 07:35 AM

The Alternative Reef makes these magnetic frag stations in all sizes. They're fantastic and I've been using them for many years. They bring good dimension to the reef, utilize unused space and the coral encrusts on them just like rock.

Sent from my iPad using Tapatalk

euphoricgear · 10/11/2018, 01:47 AM

Thanks. I'll look into those as well.

gcarroll · 10/11/2018, 03:13 PM

Ceramic magnets do not rust and do not need to be coated
Neodymium magnets all rust!

euphoricgear · 10/14/2018, 09:32 PM

Thanks for the info.

10/10/2018, 12:40 AM	#1
euphoricgear Registered Member Join Date: Nov 2006 Location: north hollywood Posts: 3,286	Do magnets rust? Hey guys, just wanted to know if anyone has ever glued magnets on their frag plugs or rocks and placed them on the glass. Which magnets did you use and did you ever noticed it they rusted? Are there "safe" magnets for salt water or any would work? https://www.amazon.com/ETO-MAGNETIC-...A2DFG8UZH4NS8K Found this on the decription: LOOK GREAT ON ANY SURFACE - Made from Brushed nickel silver finishing material, these stainless steel magnets for refrigerator are specially designed to look ultra-attractive on your fridge, washing machine, dashboard etc. Any info would help. Thanks

10/10/2018, 07:35 AM	#3
dodgerblew Registered Member Join Date: Jan 2004 Location: Palmdale, Ca Posts: 12,413	The Alternative Reef makes these magnetic frag stations in all sizes. They're fantastic and I've been using them for many years. They bring good dimension to the reef, utilize unused space and the coral encrusts on them just like rock. Sent from my iPad using Tapatalk __________________ Rik Obladi Oblada, life goes on Brah! Current Tank Info: Tankless in TX and watching from the sidelines

10/11/2018, 03:13 PM	#5
gcarroll Registered Member Join Date: Apr 2002 Location: Orange, CA Posts: 9,666	Ceramic magnets do not rust and do not need to be coated Neodymium magnets all rust! __________________ Greg Carroll I will be at REEF-A-PALOOZA! SPS = Stability Promotes Success Be wary of advice coming from those who will not show you the fruits of their success! Current Tank Info: building: 250g AGE Euro tank, Abyzz A200, Vertex Supra-G filtration, Ecotech Radion Pro LEDs, ...

10/10/2018, 01:04 AM	#2
Subpilot Registered Member Join Date: Feb 2003 Location: San Pedro Posts: 155	Bare magnets rust big time (including Neodymium). Most Neodymium magnets come with a nickle plating that makes them corrosion resistant. That said I think your best bet is to add an extra layer of protection and cover them with epoxy. If you heat the epoxy just after you apply it it will become very low viscosity and can make a light coating that wont reduce the magnets strength too much.

10/11/2018, 01:47 AM	#4
euphoricgear Registered Member Join Date: Nov 2006 Location: north hollywood Posts: 3,286	Thanks. I'll look into those as well.

10/14/2018, 09:32 PM	#6
euphoricgear Registered Member Join Date: Nov 2006 Location: north hollywood Posts: 3,286	Thanks for the info.