reef safe magnets

[LOVEROCK]

anyone know any reef safe magnets? i wanna make a diy magnetic rock/drilled and epoxy magnet inside .

 

[Billdogg]

I use plastic coated ones from www.kjmagnetics.com I use the 3/4 diameter x 3/8 thick. I think they have ~#10 pull. Great for frag racks or whatever else you think of. Some of them have been in one tank or another for at least 15-20 years and are as good as the day I got them.

 

[mikee002]

I use plastic coated ones from www.kjmagnetics.com I use the 3/4 diameter x 3/8 thick. I think they have ~#10 pull. Great for frag racks or whatever else you think of. Some of them have been in one tank or another for at least 15-20 years and are as good as the day I got them.

Do you find that the 10# pull is enough? I’m assuming you have 1 inside the tank and 1 on the outside, or you have. Metal object only on one side?

 

[ca1ore]

KJ Magnetics seconded. Pull strength is a function of wall thickness.

 

[Boxofpurplerocks]

I use plastic coated ones from www.kjmagnetics.com I use the 3/4 diameter x 3/8 thick. I think they have ~#10 pull. Great for frag racks or whatever else you think of. Some of them have been in one tank or another for at least 15-20 years and are as good as the day I got them.

How thick of glass do you use them on? Looking to use these and wondering if they’d be sufficiently strong through the glass on my standard 75 gallon.

 

[ID-Reefer]

Im wanting to do something similar but I have 3/4" glass...

 

[Billdogg]

How thick of glass do you use them on? Looking to use these and wondering if they’d be sufficiently strong through the glass on my standard 75 gallon.

The ones I have used work well for anything up to about 1/2" glass

Im wanting to do something similar but I have 3/4" glass...

KJ sells magnets of many different strengths. It might take a little experimentation, but I'm 100% certain that they'll have what you need. The ones I use on my tanks have. I think, about 10+ lbs of pull and are plenty strong enough even on an ancient Oceanic 120 with 1/2" glass. Perhaps look at something in the 15-20lb strength?